[HN Gopher] Vision Pro teardown part 2: What's the display resol...
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       Vision Pro teardown part 2: What's the display resolution?
        
       Author : mzs
       Score  : 119 points
       Date   : 2024-02-07 16:23 UTC (6 hours ago)
        
 (HTM) web link (www.ifixit.com)
 (TXT) w3m dump (www.ifixit.com)
        
       | kj99 wrote:
       | "friend of iFixit Karl Guttag has a blog post explaining why
       | using the Vision Pro as a replacement for a good monitor is
       | "ridiculous."
       | 
       | ...
       | 
       | This, says Karl, makes for a virtual Mac display with low enough
       | PPD to see individual pixels--not quite the standard desktop
       | display"
       | 
       | So rather than just trying it for themselves and realizing Karl
       | is wrong, they quote this uncritically?
       | 
       | For what it's worth, there's nothing wrong with Karl's math. He's
       | just not taking into account the fact that the Vision Pro isn't
       | mounted in a fixed position and that your brain integrates
       | information over time.
       | 
       | In practice it certainly is as clear as my 4K display when I use
       | it for mirroring.
       | 
       | It's definitely not as good as a 5K studio display, but then
       | Apple never makes that claim.
        
         | lukev wrote:
         | Eh... it's extremely good and more than I expected, but it's
         | not quite 4k quality IMO. Not because I can see the pixels (I
         | can't), but just because of very slight inconsistency across
         | the field of vision, and motion blur when I move my head.
        
           | WhatIsDukkha wrote:
           | I've wondered how it looks with a very large spreadsheet
           | filled with figures?
           | 
           | That big span of numbers should be fairly revealing of its
           | display capabilities, with all the lines and columns.
           | 
           | How is the fringing and aliasing as you look at different
           | angles?
           | 
           | Is a large pdf filled with math and tables comfortable to
           | spend a few hours with taking notes?
        
             | phonon wrote:
             | Here you go! It's not great.
             | 
             | https://kguttag.com/2024/02/05/spreadsheet-breaks-the-
             | apple-...
        
               | WhatIsDukkha wrote:
               | Haha I hadn't checked my rss feed!
               | 
               | I love it when someone smarter and more diligent than me
               | does the work :)
        
         | steveklabnik wrote:
         | One of my friends who got a Vision Pro is disappointed in its
         | use as a monitor, but only because he has multiple large
         | monitors on his Mac, yet you can only set up one 4k display
         | inside the Vision Pro, so it ends up being effectively much
         | smaller _and_ lower resolution for him.
         | 
         | Slightly different problem, but related. I'm sure it'll get
         | there over time.
        
           | ballresin wrote:
           | This was going to be my complaint with the headset as well. I
           | use 2x 49" super ultrawide displays, as well as 2x 27" 4k
           | displays. Lots of real estate.
           | 
           | But then I started to think harder about what I was consuming
           | display space with, and started to peel those things out into
           | their Vision or iPad app equivalents. I'll not get into the
           | obvious trade-offs of using iPad apps, but it largely suits
           | the need.
           | 
           | Once I had Slack, Outlook, a Terminal, and TablePlus floating
           | separately from the Mac display, I started to see a path
           | toward potentially not caring if I even had the Mac display.
        
             | elliotbnvl wrote:
             | How did you manage the terminal? How do you use it?
        
               | kj99 wrote:
               | Blink works great. Not as a local terminal, but it's very
               | good for remote shells.
        
           | kj99 wrote:
           | Apple only ever promised it would mirror one 4K display. They
           | announced that clearly when they introduced it.
           | 
           | It does that as well as the promised, but nothing more.
        
             | steveklabnik wrote:
             | Sure, I (nor they) am not accusing Apple of being
             | misleading. That doesn't change that there's room for
             | improvement.
        
               | kj99 wrote:
               | True - I just found it surprising that someone bought it
               | and was then disappointed that it didn't do something
               | that was never suggested it would do.
        
               | steveklabnik wrote:
               | He didn't buy it for that specifically, he bought it
               | because he wanted to see what it was like. This is like
               | one sentence of many discussions we've had about it. Lots
               | of pros, lots of cons.
        
           | threeseed wrote:
           | Apple is rumoured to be testing multi-monitor support:
           | 
           | https://www.macrumors.com/2024/02/06/vision-pro-virtual-
           | disp...
        
         | danpalmer wrote:
         | Karl Guttag has a history of getting a lot of excruciatingly
         | difficult details right, and missing the literal big picture
         | right in front of him. I think he makes great technical
         | contributions to the field (at least from my perspective as a
         | layman), but every one of his analyses that I have read ends
         | with something to the effect of "and this is why it is
         | physically impossible for AR/VR to ever work", which is far
         | beyond skepticism. It makes it hard to take the rest of his
         | analysis seriously because it shows an irrational bias against
         | the technology.
        
           | kj99 wrote:
           | Yeah. It's weird. Even the analysis of passthrough is so off.
           | If I look out of my window with AVP on, it's obvious that I'm
           | looking at a comparatively low res screen, but if I look at
           | digital content, passthrough seems perfect because it's not
           | in my fovea, and given that the point of the device is to
           | interact with digital content, passthrough is definitely at
           | the level of being good enough.
        
         | threeseed wrote:
         | Karl Guttag: "As per last time, since I don't have an AVP."
         | 
         | For a device like this where there is so much more than just
         | raw hardware impacting user experience anyone who doesn't own
         | one should have their opinion immediately discounted.
        
           | phonon wrote:
           | He owns one now.
           | 
           | https://kguttag.com/
        
       | jkubicek wrote:
       | > The Vision Pro comes in at a stunning 3,386 PPI.
       | 
       | Sweet jesus.
       | 
       | I know that PPD is the actual important measurement here, but
       | still, a display with 3K PPI is outrageous.
        
         | michaelbuckbee wrote:
         | Agree, but also the closer the screen gets to your eyeball the
         | more it matters.
        
           | nomel wrote:
           | How so? The light coming into your eyes is taking the exact
           | same physical path through your lens, and inside, as if the
           | virtual display _actually_ existed*. It 's a physical
           | requirement that the optics achieve this, for you to be able
           | to see the image.
           | 
           | * Assuming the virtual display is virtually positioned at the
           | focal plane of the lens, which is usually around 3m.
        
             | bongodongobob wrote:
             | How does pixel density not matter the closer the display
             | gets to your eye? What?
             | 
             | No idea what focal length has to do with anything, we're
             | talking apparent pixel density which is directly related to
             | screen distance.
        
             | dnissley wrote:
             | Simple: Pixels appear larger when they are closer to your
             | eye.
        
         | mciancia wrote:
         | So, given their comparison with iphone/65 inch TV we would need
         | 10k PPI to get similar PPD.
         | 
         | I wonder if that's possible with todays technology
         | 
         | Edit: Seems like there are some news from last few years about
         | samsung having 10k PPI displays
        
           | Gare wrote:
           | Seems like even 60 PPD in the central region would already be
           | "good enough" for most.
        
         | fsh wrote:
         | The DLP/LCD chips inside 4K video projectors have about the
         | same pixel density.
        
           | huslage wrote:
           | Reflective displays like that are much simpler to make than
           | an OLED.
        
         | newzisforsukas wrote:
         | https://news.stanford.edu/2020/10/22/future-vr-employ-new-ul...
        
       | modeless wrote:
       | > they also offer bifocals, and progressives
       | 
       | Wow, really? I don't see how that makes any sense. Bifocals are
       | for things that vary in distance, but the displays are at a
       | constant distance from your eyes. Are people really so used to
       | looking through bifocals that they need them in a headset just to
       | feel comfortable even though they aren't necessary to focus?
       | 
       | I'm disappointed there is zero detail about the eye tracking
       | cameras. Where they're located, what kind they are, how they see
       | around/through the lenses, where the infrared illumination is.
       | Has anyone else been investigating this?
        
         | pram wrote:
         | I've found a lot of recent teardowns from them are light on
         | interesting details. They seem to be making short YouTube
         | videos now that don't really cover everything.
         | 
         | The screen analysis was interesting but they rushed through the
         | rest, and didn't even look at any of the cameras???
        
         | daemonologist wrote:
         | I'm not aware of any information on camera details, but you can
         | see the locations of the cameras and illuminators in this image
         | from Apple:
         | https://web.archive.org/web/20240206041049/https://www.apple...
         | 
         | The tracking system is inboard of the lenses, so it doesn't
         | need to look through them. There are two cameras per eye, below
         | and on the inside (near the nose), and infrared illuminators
         | (not sure if they're just LEDs or something more complex)
         | surrounding the lenses on all sides.
        
         | outworlder wrote:
         | > but the displays are at a constant distance from your eyes
         | 
         | Nitpick, but the focal point is about 6 feet away, which is the
         | important thing for this discussion.
        
         | jrockway wrote:
         | I don't see how bifocals could possibly work in this; the
         | display is always a constant distance away. What I bet they do
         | is interpolate between your distance and close-up prescription
         | to guess what prescription you need to view the constant-
         | distance displays.
         | 
         | You can ask your optometrist for "computer glasses" if you want
         | to see this in action.
        
           | heisenzombie wrote:
           | That brings up a question for me: Are there people with
           | wildly different near and far prescriptions whose vision
           | would be improved by looking at the world through this device
           | which reprojects it at a fixed optical distance such that a
           | single prescription can be used?
        
         | banana_giraffe wrote:
         | Not mentioned, but Apple also has help pages for what to order
         | if you only wear/need reader eyeglasses. I'm equally confused
         | why this would be necessary.
        
         | thomastjeffery wrote:
         | It's a contextual communication choice: the intended reader is
         | someone who is concerned about their bifocal prescription. I
         | would assume that whoever makes the lenses will simply choose
         | the correct focal measurement corresponding to the Vision Pro's
         | fixed 6ft focal distance, and manufacture a lens for that
         | specific focus. What needs to be communicated to the intended
         | reader is that a bifocal prescription will be properly
         | accommodated.
        
       | xnx wrote:
       | Whatever the strengths and weaknesses of the Apple Vision Pro as
       | a product, this is a marvel of engineering. The APV seems to
       | include the most advanced version of the output from several
       | industries (semi conductors, display, materials, assembly, etc.)
        
         | mastax wrote:
         | Also textiles. The solo knit band is a technical marvel. A
         | single 3D knit with embedded mechanical parts and hidden cables
         | to adjust tension. It's not my wheelhouse but I'd love to read
         | a textiles expert's take on it.
        
           | jsheard wrote:
           | It's a shame the solo knit band seems to be form-over-
           | function, it looks cool and a ton of work clearly went into
           | developing it, but nearly everyone seems to find the much
           | simpler dual loop band to be more practical.
           | 
           | e: I stand corrected, the reviewers I've watched mostly
           | preferred the dual loop but there's plenty of solo knit fans
           | here. I guess that YMMV factor is why they include both.
        
             | ericlewis wrote:
             | Anecdotally the solo knit is much more comfortable on my
             | head than the dual loop. The dual loop seems designed for
             | people with more elongated heads.
        
               | ribosometronome wrote:
               | >The dual loop seems designed for people with more
               | elongated heads.
               | 
               | As the owner of a long head, I definitely struggled with
               | feeling like I couldn't get the VP to sit right for my
               | eyes with the solo loop. The dual resolved that easily.
               | 
               | Then you get to have the single loop as new fidget toy.
        
             | dawnerd wrote:
             | Dual loop hurt. Once you figure out the solo knit needs to
             | be worn higher up it's way better.
        
             | fumar wrote:
             | I prefer the solo band over the dual loop. I've used it
             | since launch with the solo band. It should sit slightly
             | high on the back of your head.
        
             | Psillisp wrote:
             | I'm immensely enjoying the solo knit.
        
             | amiantos wrote:
             | Joining the chorus of voices who say they found the solo
             | band horrible, switched the dual loop, and the ended up
             | switching back to the solo band.
        
             | notum wrote:
             | I just wanted to say hi to the Apple surveyors gathering
             | this data for v2. /wave
        
           | maxglute wrote:
           | Can you link to some expert take? Sounds interesting.
        
         | KRAKRISMOTT wrote:
         | Same as juicero, many people bash the product but the
         | engineering is world class.
        
           | cqqxo4zV46cp wrote:
           | Like, maybe, not same as.
        
           | jrockway wrote:
           | I am not sure that I agree. Engineering is a world of
           | tradeoffs. Juicero said "we are going to overbuild every
           | component even if it means the company goes out of business".
           | Welp.
           | 
           | Most impressive to me is when every unnecessary component has
           | been removed, and every remaining component is as simple as
           | possible. (The example that sticks in my mind is the humble
           | $5 drip coffee pot. No moving parts except the switch to turn
           | it on!)
        
             | ycombinete wrote:
             | I'm currently looking at getting a drip coffee pot. Can you
             | recommend one?
        
               | emptybits wrote:
               | I'll jump in here and suggest a Technivorm Moccamaster.
               | As simple as possible but no simpler. It has an "ON"
               | switch. Excellent drip brewer. Widely available. Handmade
               | in EU. Five year warranty. All parts available and
               | serviceable. Design has not changed materially for
               | decades. Certified by European Coffee Brewing Center and
               | the Specialty Coffee Association.
               | 
               | Where I'm coming from: I'm picky about coffee making and
               | am not interested in the espresso investment for home. So
               | I made delicious Chemex and Hario pourovers for myself,
               | family, and friends for 15 years because I never thought
               | I'd enjoy the compromises of a drip coffee maker. I was
               | wrong. The Moccamaster makes an excellent half or full
               | carafe, consistently, every time. And I don't suffer
               | Pourover Interruptus on busy mornings. The thermal carafe
               | version was my choice. No regrets.
        
               | ghc wrote:
               | I'll second this. I've had a Moccamaster for 15 years and
               | I suspect it'll last another 15. The version with the
               | thermal carafe is simple, durable, and makes excellent
               | coffee.
        
               | olliej wrote:
               | I'm not a coffee connoisseur (and honestly could only
               | spell that because of autocarrot), but for me beans are
               | hands down more important than any other part of the
               | brewing process until you get to absurdly expensive.
               | 
               | So we got a Krups grind and brew unit, though the exact
               | model we have isn't available anymore, it's been going
               | strong for maybe 7 years without any issues. It has a
               | hopper you can just fill with beans and it grinds an
               | approximation of the right amount for home much coffee
               | you want (and you can put water in the night before and
               | set it to have coffee brewed when you get up). My only
               | complaint for our particular model is the burr is really
               | loud, but I don't recall if it's always been that loud or
               | it's just beginning to get old.
               | 
               | [edit: this is an addendum because I saw u/emptybits
               | suggestion and just wanted to acknowledge that it's a
               | nicer brewer but I'm a pleb and here's the reasoning I
               | have for preferring my lazy-omatic brewer (maybe I should
               | trademark the name?) :D] It's not as expensive (or as
               | nice looking) as the Technivorm that u/emptybits
               | recommends, and I would absolutely expect better
               | extraction from the technivorm as well (at least vs our
               | model, which has the very old school single drip point),
               | but the convenience of a single appliance is honestly
               | more important to me than the price difference. I think
               | there's also an element of how much the ritual of coffee
               | making matters to you? I don't care at all, so it's just
               | an appliance in the corner, and there's the other extreme
               | where people have millions of gadgets and/or siphon
               | brewers (which I admit do look super fun, but they also
               | apparently don't even produce good coffee?).
               | 
               | One thing I do wish is there was a thermal carafe option
               | for our unit, even though it does keep the element going
               | to keep the coffee warm I do think that even I can taste
               | some harshness after it's been sitting on the warmer for
               | a while, and then when the warmer does disengage it
               | becomes cold very quickly.
        
           | nicolas_17 wrote:
           | Speaks really badly of the Vision Pro if there's anything
           | that can be compared to Juicero.
        
           | LASR wrote:
           | > Same as juicero, many people bash the product but the
           | engineering is world class.
           | 
           | Absolutely not. Juicero was absolutely terrible engineering.
           | Any mechanical engineering intern can whip up a big chonking
           | hunk of a juicer or any other kind of product in SolidWorks.
           | 
           | Filleting every edge does not mean "engineering".
           | 
           | The vast majority of the work and difficulty in engineering
           | is NOT getting something to work, but doing so while also
           | working within constraints. There were no constraints in the
           | Juicero. It was impressively manufactured. But terribly
           | engineered. Which is why the entire thing went down despite
           | an absurd level of fundraising.
        
             | CamperBob2 wrote:
             | Eh, sometimes the Nuremberg defense is valid. The engineers
             | were just doing what they were paid to do. As I recall from
             | the Bolt teardown [1], if it had been a useful and
             | desirable thing to build in the first place, it would have
             | worked well.
             | 
             | 1: https://blog.bolt.io/juicero/
        
             | jiggawatts wrote:
             | There is a great tear-down video of a juicero on YouTube
             | where the guy makes comments the whole way through about
             | how every part is ridiculously over-engineered:
             | https://youtu.be/_Cp-BGQfpHQ
        
               | CamperBob2 wrote:
               | Have to remember that this was a "give away the razor,
               | sell the blades" scheme. If you're the proprietor of such
               | a scheme, you really, really don't want the razor to
               | break.
               | 
               | The ballsy thing about Juicero was that they didn't give
               | away the razor. It was priced at something like $400.
               | They were awfully high on their own supply.
        
         | antman123 wrote:
         | I prefer the solo band
        
         | mrcwinn wrote:
         | I agree. As much as tech communities tend to dump on
         | achievements, we really should applaud this work. I can't wait
         | to see breakdowns of versions 2, 3, 4. As you begin to master
         | your own creation and manufacturing process, it will be neat to
         | see how much simpler it becomes.
        
           | monkeynotes wrote:
           | I do wonder about the actual material constraints. My thought
           | is, will it even be possible to make something so slight that
           | it becomes an everyday piece of tech like the iPhone, or is
           | it destined for entertainment and casual work?
           | 
           | Batteries are heavy, the optical aspect is bulky, heat
           | dissipation is challenging. I haven't seen any tech on the
           | near horizon that can answer those challenges. I wonder what
           | Apple has in their R&D plans.
        
         | seydor wrote:
         | Didn't all VR devices before it do the same?
        
           | pornel wrote:
           | Similar, but all the components in it are a notch better --
           | higher resolution, better pass-through video, more precise
           | hand tracking, and much faster CPU.
           | 
           | However, my impression from iFixit's teardown is that there's
           | a ton of tiny boards, screws, and ribbon cables. I bet in v2
           | they'll figure out how to package it even more densly.
        
           | 0x457 wrote:
           | Early VR of this wave had some remarkable displays, not in a
           | sense that "wow they are so good", but "wow HMD displays were
           | pure trash before". Quest 1 while it was a very silly device,
           | it was a pretty good inside-out HMD. Q2 was a lot better.
           | 
           | All of those devices still suffered from the same issues:
           | they can put only whatever Qualcomm can make for them. XR2
           | Gen 2 is slower than Snapdragon from the same generation.
           | This is due to how "inefficient" Qualcomm SoCs compared to
           | what Apple makes for themselves. (not M2 is meant for
           | desktops and XR2 Gen2 is based on SoC used in mobile phones,
           | so they were created with different power and thermal budgets
           | in mind)
           | 
           | I find it interesting how apple went about the "number
           | crunching" part of AVP by making a separate coprocessor just
           | for that. Yeah, XR2 Gen2 has similar capabilities on SoC, but
           | I want to see benchmarks.
        
         | MBCook wrote:
         | Boy when they showed the shot of the Vision Pro Display density
         | vs the iPhone 15 I literally laughed out loud.
         | 
         | That screen is simply incredible as a piece of technology.
        
         | Krasnol wrote:
         | I'm just going to leave this material review here:
         | https://www.youtube.com/watch?v=LmcWMjBpYBU
        
       | JKCalhoun wrote:
       | > we estimate the Vision Pro to have an average of 34 PPD
       | 
       | I'm not sure that is interesting though. I would expect tradeoffs
       | on PPD for my peripheral vision, higher density for the center of
       | my vision.
       | 
       | I want PPD numbers like perhaps an average PPD for the center 30
       | degrees FOV.
        
         | hnuser123456 wrote:
         | Issue is that you can look around with your eyes at any part of
         | the display, so the whole display needs to be able to show very
         | high PPI/PPD, if you look at it. They can save on compute by
         | detecting where your eyes are looking and reducing render
         | resolution on the edges of your eye's FOV though.
         | 
         | https://en.wikipedia.org/wiki/Foveated_imaging
        
       | akamaka wrote:
       | The potential of the display is what convinces me that Vision
       | will be a breakthrough device.
       | 
       | If Apple has a roadmap to keep scaling up the resolution, while
       | only incurring a fixed manufacturing cost of producing a small
       | 2cm display, there will soon be no other device category that
       | will be able to offer such image quality at so low a cost, not
       | laptop screens or desktop monitors or TVs or movie theatres.
        
         | holman wrote:
         | After using it since launch, the displays are still startling
         | every time I step back to really look at them. They look _so
         | good_. There 's a few things that could be improved upon -- let
         | me look at my phone, or project a digital display _over_ my
         | phone screen -- but the UI and virtual displays you see in
         | Vision Pro feel just like reality. It 's startling, and bodes
         | well for future Vision Pro devices (and other VR handsets,
         | too).
        
           | losvedir wrote:
           | I agree they feel like reality, but I don't know how much of
           | that is the display quality vs the absolutely astonishing way
           | they stay fixed in space.
        
         | esskay wrote:
         | Long term I dont think they _want_ Vision to be a breakthrough
         | device. It's only supposed to be a stepping stone towards a
         | true AR/MR device. The ultimate and likely not possible for
         | decades goal is a contact lense based solution. The main goal
         | is a normal looking pair of glasses capable of true AR/MR (not
         | Google Glass or Nreal style attempts with hardware thats not
         | really capable of a truly usable experience).
         | 
         | Long term wide adoption cant really happen with a VR device,
         | the pitfalls (Weight, long term pain, hair being messed up, red
         | marks on your face, poor battery life, etc) are too high of a
         | barrier.
        
           | steveklabnik wrote:
           | Tim Cook is famously pretty negative on VR, but positive on
           | AR. I would agree with you.
        
           | akamaka wrote:
           | I agree 100%, I think the potential is in a future Vision
           | device which is smaller, lighter, and cheaper, while having
           | an even better display.
        
           | TillE wrote:
           | That's been their plan in the past, but I wonder if they'll
           | reconsider. You can't do stuff like virtual environments in
           | AR glasses. Apple may never care about games, but there are
           | other VR features which users might really love.
           | 
           | I wouldn't be surprised if the headset continues even in the
           | future where amazing perfect AR glasses are possible.
        
           | threeseed wrote:
           | > The main goal is a normal looking pair of glasses capable
           | of true AR/MR
           | 
           | You can't consume media e.g watch sports, movies etc or do
           | any real work with those glasses which is a huge part of why
           | Apple built Vision Pro in the first place.
           | 
           | And the battery technology doesn't exist for them to last
           | anything longer than a few minutes in such a form factor
           | unless you have it tethered.
        
             | monkeynotes wrote:
             | I agree, but how will this device ever get beyond home
             | entertainment or light office work if it's always going to
             | be a big screen strapped to your face, not to mention the
             | social aspect. I dread to live in a world where people are
             | walking around self absorbed prodding and poking at things
             | no one else can see. It just seems so selfish and
             | antisocial.
        
               | danielbln wrote:
               | > I dread to live in a world where people are walking
               | around self absorbed prodding and poking at things no one
               | else can see.
               | 
               | Phones?
        
           | gfodor wrote:
           | You're confused. Vision Pro is a true AR/MR device. It uses
           | AR passthrough. A lot of people for a long time have assumed
           | there's some inherent reason people would never accept
           | passthrough AR devices. A few people like myself have been
           | consistent saying that's not the case, that passthrough AR is
           | actually the right solution. Vision Pro is just the first
           | version of what I expect to be a long line of passthrough AR
           | devices from Apple.
        
           | paganel wrote:
           | I don't think the physics will ever be there in terms of
           | battery/energy consumption of said future devices, meaning
           | that I don't think Apple (or any other company) will ever be
           | able to build a processing-device that won't have to depend
           | on a big enough battery.
           | 
           | You could try to miniaturise it all (up to a point) and
           | include it as part of the device itself, similar to Google
           | Glass, but who would want such an energy "bucket" so close to
           | one's eyes and face? That's just disaster (and a big lawsuit)
           | waiting to happen.
        
         | mastax wrote:
         | If I understand your point, I don't think it makes as much of a
         | difference as it may seem. Display panels are typically made
         | from large "mother glass" panels out of which smaller display
         | panels are cut. So you can make many different sized panels
         | from a single type of mother glass (all with the same PPI of
         | course). And the TV/monitor industry has delivered remarkable
         | improvements in quality and cost very quickly, so it's not as
         | if our current methods aren't working.
         | 
         | It's an interesting thought though, let's see how it develops.
        
           | jsheard wrote:
           | The process used to make Micro-OLED displays is very
           | different to the processes used for large OLEDs or LCDs, it
           | has more in common with silicon manufacturing than
           | conventional display manufacturing. AIUI that means the panel
           | size will always be limited by the maximum reticle size of
           | the silicon process, which is usually at most ~800mm2.
           | 
           | That lines up with the 27.5x24mm size of the panels in the
           | Vision Pro - that's 660mm2, already close to the largest
           | silicon die you can make.
        
         | megaman821 wrote:
         | I thought Sony makes the display (and cameras for that matter).
         | It's odd that there are two critical pieces of tech that need a
         | lot of R&D for the Vision Pro to keep progressing, and Apple
         | has nothing to do with them. The screens need to get brighter
         | and have higher resolution. The cameras need to work faster in
         | low light and capture more accurate colors.
        
         | phonon wrote:
         | It's Sony's display. You can see a very similar version here.
         | [1]
         | 
         | [1] https://www.sony.com/content/sony/en/en_us/SCA/company-
         | news/...
        
         | jijijijij wrote:
         | > The potential of the display
         | 
         | ... will never be manifested, because Apple won't let you have
         | it. Use your imagination to tease you, but you won't ever get
         | it. Lock'n'lol. iPad paperweight. Maybe next time, tiger.
        
       | dyno12345 wrote:
       | discussion of Part 1:
       | https://news.ycombinator.com/item?id=39246664
        
       | robg wrote:
       | Can someone explain why they think the AVP version in 2034 will
       | be light years ahead of v1? I see amazing engineering but not
       | many places to shrink everything into a lightweight pair of
       | glasses.
        
         | ceejayoz wrote:
         | What other physical tech product doesn't meaningfully improve
         | in a decade?
         | 
         | (Maybe the TI-83 calculator?)
        
         | nomel wrote:
         | You should ignore anyone claiming unquantifiables like "light
         | years ahead".
         | 
         | In 10 years, my hopeful list is:                 * More
         | custom/specialized silicon for XR. There's aren't many players
         | here currently.       * Retina/~60 PPD.       * Micro LED (not
         | OLED), making varifocal and HDR possible.       * Varifocal
         | lenses, which are just as important for comfort as high res.
         | * Cameras optimized for passthrough, rather than borrowed from
         | cellphones.       * Lighter weight. They're almost tolerable,
         | rather than acceptable, as is. This almost certainly involves
         | offloading some of the compute.
         | 
         | But, a powerful untethered XR system and a lightweight set of
         | untethered glasses will necessarily be very different, in
         | capabilities. I imagine I'll end up with a tethered device, as
         | a display replacement, in the next 10 years.
        
           | robg wrote:
           | Thanks for this list, doesn't seem like the pair of glasses
           | that people are envisioning, more like iPhone X, lots of
           | incremental improvements but not a major difference from v1
           | to v10 or even v15.
        
             | nomel wrote:
             | > lots of incremental improvements
             | 
             | As should be expected. This is the only way tech has ever
             | progressed, without exception. The only perceived
             | exceptions involved shifting existing tech into a space
             | that it wasn't present before.
             | 
             | > from v1 to v10 or even v15.
             | 
             | I think it's a little more than that. I think most would
             | agree that it's not usable, in its current state, for a
             | screen replacement, or as a primary computing device. Even
             | Apple suggested so, in their announcement, saying something
             | like "short trips". I suspect that V15 will be the
             | _primary_ computing device, for most people.
        
         | grecy wrote:
         | > _Can someone explain why they think the AVP version in 2034
         | will be light years ahead of v1?_
         | 
         | Think back to when the iPhone first came out - could you have
         | predicted how it would improve over the next 10, or 15 years?
         | 
         | Sure some things are obvious like faster networking, higher
         | quality screen, better camera and just faster processor. But in
         | all honesty I'd say some of the biggest improvements are apps
         | that now define _how_ we use it and _what_ we use it for. It 's
         | obviously so much more than a phone.
         | 
         | I'm not sure anyone quite knows what the future of VR/AR truly
         | is, but I'm betting it will apps which will change _how_ we use
         | it and _what_ we use it for that will make it  "light years
         | ahead" of where we are now.
        
       | mschuster91 wrote:
       | > Looking like a bulked-up first-gen iPhone, the case is milled
       | out of a single chunk of aluminum, and the lid snaps into place
       | with firm perimeter clips, leaving little to no seam for us to
       | pry at. We needed a hammer and chisel to open it up! Adhesive
       | also lines the lid, just to make sure you get the message: this
       | pack is not designed to be opened.
       | 
       | > Currently, iFixit engineering intern Chayton Ritter has Apple's
       | proprietary battery cable splayed out on a breadboard, and is
       | trying to determine what sort of electronic handshakes are
       | required to make the Vision Pro accept battery packs.
       | 
       | Apple _really_ dropped the bar on this one. It 's high time the
       | EU forces companies to design their hardware in a way that allows
       | the user (or a recycling company!) to replace the batteries
       | inside without destroying it in the process, and for fucks sake
       | what happened to the USB-C requirement for electronic devices?
        
         | lawik wrote:
         | The brick/battery charges via USB-C from what I have seen.
         | Casey Neistat ran that into a battery pack for extended use. I
         | think that makes them plenty compliant.
         | 
         | I asusme the custom connector on the head unit is better fit
         | for purpose (comfort, not getting snagged) than USB-C would be.
        
           | duskwuff wrote:
           | Or, to put it even more simply -- the battery pack _is_ the
           | replaceable battery. Which is fine; it 's little different
           | from the similarly sealed battery packs on electric power
           | tools, for instance.
        
           | ribosometronome wrote:
           | The battery charges via USB-C. The battery connects to the
           | headset with a weird side-snap connector that's rather flat.
           | As designed, there's not anywhere obvious that a USB-C port
           | could really fit on the headset and assuming they hope to
           | make it smaller in future years, the problem only amplifies.
           | I think other headsets have cables coming out of them when
           | they need to connect to other things, rather than relying on
           | a port. It's not particularly aesthetic.
        
         | threeseed wrote:
         | USB-C makes zero sense on the headset which is why it's on the
         | replaceable battery.
         | 
         | You need a connector that can tightly lock and be capable of
         | withstanding significant angular loads on the cable ends.
         | 
         | Twist locks have been proven to work well.
        
         | outworlder wrote:
         | > It's high time the EU forces companies to design their
         | hardware in a way that allows the user (or a recycling
         | company!) to replace the batteries inside without destroying it
         | in the process
         | 
         | Why? The battery pack is external. I have not ever seen a
         | requirement that battery packs themselves need to be
         | repairable. Not many devices come with external batteries these
         | days, but do you really want to open them up to replace the
         | cells? Where are you going to source reputable prismatic cells
         | to use with such a device? They are also pretty delicate, you
         | don't want most people handling them. If it used standard 18650
         | cells I could kind of see the point, but it would be much
         | larger.
         | 
         | A recycling company can destructively open it up to recover the
         | material.
         | 
         | A better 'mandate' would be to require it to accept third party
         | power supplies.
         | 
         | > for fucks sake what happened to the USB-C requirement for
         | electronic devices
         | 
         | USB-C would suck for this application. It already does for
         | headsets like Meta's Quest, where you can use a link cable to a
         | PC. You need to secure any USB-C cables pretty well if you
         | don't want to risk damaging the port.
        
           | mschuster91 wrote:
           | > I have not ever seen a requirement that battery packs
           | themselves need to be repairable.
           | 
           | Indeed it is, but it would make the life of recyclers way
           | easier. Having to use a hammer and pin to open it risks
           | puncturing the pouches.
           | 
           | > Not many devices come with external batteries these days,
           | but do you really want to open them up to replace the cells?
           | 
           | Uhhh... yes? That was the state of the art for decades before
           | removable batteries were sacrificed for optics. You can even
           | do watertight devices that way, Samsung's Active Tab 3 is
           | watertight and supports swapping batteries.
           | 
           | > Where are you going to source reputable prismatic cells to
           | use with such a device?
           | 
           | The aftermarket supply chain for devices has gotten pretty
           | well in serving that market, although I'd _also_ love some
           | standardization effort in that space.
        
             | mac-mc wrote:
             | From what I've seen recyclers push ewaste including
             | batteries through a grinder and then extract from the
             | sludge. https://www.youtube.com/watch?v=s2xrarUWVRQ
        
         | kccqzy wrote:
         | You already can replace the batteries. Apple will gladly sell
         | you another battery:
         | https://www.apple.com/shop/product/MW283LL/A/apple-vision-pr...
         | But there's no use case for a consumer to disassemble the
         | battery or to replace parts inside the battery.
        
       | fumar wrote:
       | Living with the Vision Pro is much easier than I expected. I
       | thought it would feel bulky to manage with the external battery
       | -- it hasn't. I put the battery in my pocket and pop into
       | visionOS without any hassle. I found the max time is about 1.5
       | hours before I feel slight eye and physical pressure fatigue from
       | the headset.
        
         | nomel wrote:
         | > and physical pressure fatigue from the headset.
         | 
         | Is this double loop, or cloth band?
        
           | fumar wrote:
           | Solo band, not the double loop.
        
       | joshstrange wrote:
       | The displays on the AVP are truly amazing, the best I've ever
       | seen. In fact I noticed zero issues relating to the displays
       | themselves. Where this device stumbles is the passthrough
       | (cameras) and the Mac Virtual Display (AirPlay). If/when those
       | get better I'll buy another one but for now I'm planning on
       | returning mine before the 14 days are up.
        
       | dwallin wrote:
       | One thing the article doesn't get quite right is you can't
       | compare ppd of a virtual display directly to an IRL screen. The
       | virtual pixels are not 1:1 to device pixels. Your perspective is
       | constantly shifting slightly and the virtual pixels being sampled
       | from is constantly changing. This is providing your eyes and
       | brain a lot more data to sample from and means the perceived
       | resolution can be higher than the actual resolution.
        
         | garbageman wrote:
         | This is an interesting perspective. Genuine question: would it
         | not be the other way - seeming lower than actual resolution
         | when slightly moving? Why?
         | 
         | Could this be used to simulate a higher pixel density? Maybe
         | doing something crazy vibrating the display in some kind of
         | circular motion or something silly?
        
           | axoltl wrote:
           | There are projectors that do this trick! The technology is
           | called XPR: https://www.projectorjunkies.com/4k-dlp-
           | projectors-is-it-rea...
        
           | layer8 wrote:
           | The issue is that the original Mac pixels get 3D-projected
           | and thus interpolated onto the VP panels pixel grid. This
           | invariably loses some sharpness and detail. Even just
           | 2D-rotating a Mac screenshot by some non-orthogonal angle
           | will make it more blurry.
        
         | monkeynotes wrote:
         | I am not convinced. Your eyes are literally magnifying the
         | pixels compared to being at a distance from a modern 2k
         | display. You may have dense PPD in AVP but being that close to
         | them doesn't do it any favours.
         | 
         | I mean, if you can see a pixel you can see a pixel, there is no
         | getting around that. It's like once you notice a blemish you
         | can't not notice it anymore. From what I hear from users is you
         | can absolutely see the pixels.
        
           | ninkendo wrote:
           | My 2C/, not an expert, etc etc...
           | 
           | I think the key detail here is that each eye is getting its
           | own set of pixels for looking at the same virtual content.
           | This can lead to more detail, because the pixels aren't 100%
           | redundant (they're both looking at the content from a
           | slightly different angle.)
           | 
           | If I'm looking through the AVP at a "square inch" of my
           | virtual Mac display, it may be that each eye is getting say,
           | a 100x100 grid of pixels in this angular area. But since each
           | eyepiece is giving me a slightly different _projection_ of
           | that same inch of space, the pixels themselves are going to
           | be of subtly different values, essentially contributing more
           | information to what I 'm looking at. This is a lot different
           | from a "real" display, when both of my eyes are staring at
           | the same physical pixels. I think the idea is that my brain
           | will be combining this information into a perceptual image in
           | a way that will appear slightly more detailed than the
           | equivalent-sized pixels in meatspace.
           | 
           | > It's like once you notice a blemish you can't not notice it
           | anymore
           | 
           | Interesting that you say this... because when you move your
           | head towards a virtual object to _inspect_ any pixels you
           | saw, the image literally gets clearer (because you 're
           | getting "closer" to it) and you don't see the pixels any
           | more. IME this goes a long way towards tricking my brain into
           | thinking the pixels aren't real and therefore aren't there.
           | (I've been using my AVP for real work all day today and I've
           | been mostly very happy with it. The resolution is absolutely
           | the least of my concerns, and it looks subjectively
           | phenomenal to me.)
        
         | ShamelessC wrote:
         | I feel like the article covered this.
        
         | crazygringo wrote:
         | I've noticed this as well. I kind of think of it like when you
         | look through a chain-link fence, there's a lot of visual data
         | that gets blocked.
         | 
         | But if you're in a car driving past, the chain link fence gets
         | blurred out and you can see everything again.
         | 
         | Something similar happens with the constant resampling
         | happening in a VR headset. The hardware pixels are constantly
         | shifting over the image pixels, as your head constantly moves
         | just from breathing and whatnot. So not only does the signal-
         | over-time counteract any blurriness from resampling in a single
         | frame, but I find myself wondering if it enhances the
         | resolution slightly.
         | 
         | (After all, you can buy 1080p projectors that "jiggle" the
         | image by half a pixel diagonally, several times a frame, to
         | effectively double the resolution and claim it's halfway to 4K.
         | And what is the constant movement of pixel resampling if not a
         | similar jiggling?)
         | 
         | I'm curious if there's an image processing term for this
         | effect? The effective signal resolution from a constantly
         | shifting pixel grid over time, and how to calculate it
         | mathematically.
        
           | CarVac wrote:
           | Multi-frame super-resolution.
           | 
           | What matters is illuminated pixel aperture size, in the end.
           | The smaller the pixel aperture, the less smearing you get
           | from overlapping.
        
         | dwallin wrote:
         | I put together a simple gif to roughly demonstrate the effect:
         | https://giphy.com/gifs/JImONk8V5YK6iGBFkH/tile
         | 
         | While it still can't fully resolve shapes smaller than a pixel,
         | it definitely helps with identifying forms.
        
       | CobrastanJorji wrote:
       | This article does a fantastic job of explaining how good the
       | screen is in clear, easy to understand language. Good job!
       | 
       | Is it a good display? It's incredibly good, far beyond the DPI of
       | your phone or monitor. Does it look as good as your phone or your
       | computer monitor when used? No, at the distance you'd look at
       | them from, it looks much worse.
        
       | mrcwinn wrote:
       | The display may be 3,386 PPI, but wow my laptop screen has never
       | looked sharper after taking the AVP off my head. Screen sharing
       | from my Mac looks distractingly bad, which is a huge bummer. (AVP
       | apps, by contrast, look fantastic.) No matter how I scale or
       | where I place the space, it just never looks very good.
       | 
       | I'm really hoping this improves because it's nice to turn my 14"
       | MacBook Pro into a theater screen of sorts alongside native apps.
       | For the moment, though, AVP doesn't seem very useful apart from
       | watching movies (which is amazing).
        
         | dvdhsu wrote:
         | Agreed. I find my AVP actually quite bad for using my Mac. I
         | use a MBP instead of a MBA because 120hz makes a big
         | difference. The MBP screen within AVP is probably something
         | like 30hz (likely because it's using Airplay, and it doesn't
         | have enough bandwidth). And I can't change the resolution
         | either! It's kind of like working on a TV -- I don't see why
         | it's any better than the 14" MBP screen.
         | 
         | Overall, the AVP is a disappointment for me. Most of the new UX
         | patterns I find far worse than keyboard shortcuts. (For
         | example, a window manager is _much_ easier to use than having
         | to pinch to drag windows around. For example Vimium is much
         | easier to use than looking at elements and pinching at things.)
         | I don't consume much content (e.g. TV), but of the content that
         | I do consume, it feels lower resolution to me. The demos they
         | have (e.g. the Alicia Keys video) feels nothing like real-life
         | to me. As a parallel to what you said -- real life has never
         | looked better (after taking off the AVP), haha.
        
           | bookofjoe wrote:
           | I agree with much of what you wrote -- except I found the
           | Alicia Keys video staggeringly good. It felt like I was in
           | the studio with her and her band.
        
           | Sephr wrote:
           | You can combine paradigms for the best of both worlds (e.g.
           | physical keyboard + your apps). I imagine that IDE
           | experiences will only improve as time goes on.
        
         | zerohp wrote:
         | How is your wifi network? Have you tried changing the display
         | resolution on the Mac while you're connected to the Vision Pro?
         | 
         | The virtual display doesn't look as good as the laptop screen,
         | but it looks as good or better than the 1440p monitor I
         | normally use at my desk.
        
           | mrcwinn wrote:
           | Thank you, I'll fiddle with that. WiFi is good and my 14" M3
           | is using its native resolution, whatever the default is.
        
           | gpm wrote:
           | For comparison purposes can you share the size of your
           | monitor and how far away you sit from it? Trying to decide if
           | it's worth getting one of these (which would be a bit of a
           | pain since I'm in Canada).
        
         | jolt42 wrote:
         | Disappointing to hear. I was hoping laptop work to be on par
         | with a 27" 4k monitor, otherwise can't see I'd use it "enough".
        
           | mil22 wrote:
           | Matching the 60deg FOV of a 27" monitor at close distance,
           | it's equivalent to 1080p or less. It gets even worse at FOVs
           | equivalent to more reasonable distances.
        
           | matsemann wrote:
           | Given that the screen inside the AVP is basically 4k, your
           | screen would then have to fill your entire vision to have the
           | same resolution. So almost like having your nose touching the
           | screen.
        
         | mil22 wrote:
         | It's not surprising. The AVP has a PPD of 34. A 14" MBP screen
         | with a resolution of 3024x1964 already has a PPD of 66 at a
         | close 14" viewing distance and it gets higher as you move
         | further away [1]. Retina is considered 60+ at 20/20 vision. Of
         | course a real display has no resampling or micro-OLED smearing
         | to overcome either.
         | 
         | To achieve the same effective pixel count as a MBP, a virtual
         | screen at the AVP's PPD would have to be resized to 90deg
         | horizontal FOV, which is just too big to be comfortable,
         | equivalent to sitting 6" from a 14" MBP screen.
         | 
         | The technology just isn't there yet. We need at least another
         | doubling of PPD. See you in 10 years.
         | 
         | [1] https://qasimk.io/screen-ppd/
        
           | jsheard wrote:
           | That's the great irony of Apple trying to make AR work as a
           | monitor replacement, their existing users will be some of the
           | hardest to please in terms of resolution since they've been
           | spoiled by retina displays as standard on every Mac for the
           | last decade.
        
             | sitzkrieg wrote:
             | yea i truly do not understand. not to mention cranking your
             | neck for more than 2 seconds a workday is going to make
             | this a nonstarter once most people get over the cost
             | justifications
        
           | Ericson2314 wrote:
           | Nice website. I got a 27" 5K UHD LG monitor at 90 PPD, so
           | I'll never be able to use these things. So sharp I have to
           | wear glasses not contacts.
        
             | mil22 wrote:
             | That's my kind of monitor. :) It's not wasted either.
             | Foveal cone angular density is actually around 12,000
             | cones/deg^2, or 110 PPD, so anything up to that is
             | achievable with perfectly corrected vision. That's a lot
             | higher than the 60 PPD typically claimed for retina PPD,
             | which is at an imperfect 20/20. 110 PPD is more than 3x the
             | PPD of the AVP...
        
               | Ericson2314 wrote:
               | Good to hear! I wonder how many people kinda need glasses
               | and don't get them, making the popular opinion of what
               | the retina is capable of much too low.
        
               | mac-mc wrote:
               | Has anyone done studies showing how much people notice
               | the difference between 60 and 110 PPD photos for example?
               | There are many people who have a hard time articulating
               | 30 vs 60 PPD as it is with computer monitors. How much of
               | a diminishing return is it to go beyond 60 PPD?
        
               | cubefox wrote:
               | I don't know about studies, but I'm pretty sure there is
               | a large difference between very high contrast edges
               | (worst case: text rendered without anti-aliasing) and
               | photos or even videos, where there usually aren't any
               | high-contrast high-frequency edges (black pixel next to
               | white pixel). Since anti-aliasing is standard in font
               | rendering and pretty common in computer games, I don't
               | think very high PPD content would often be noticable.
        
               | Ericson2314 wrote:
               | On the monitor I mentioned, this text is about 15-20
               | pixels tall mostly-white on mostly-black, and I can read
               | it from ~4 feet away.
               | 
               | (website says that is ~186 PPD)
        
               | mil22 wrote:
               | That makes sense. Given that the smallest legible fonts
               | are around 5 pixels tall, that's 3-4x less PPD than your
               | monitor offers at 4 feet, so you'd need ~46-62 PPD
               | eyesight to be able to read the text. 20/20 at 60 would
               | be more than sufficient.
        
               | mil22 wrote:
               | This study popped up:
               | https://www.techhive.com/article/578376/8k-vs-4k-tvs-
               | most-co...
               | 
               | In summary, with an 88" screen at a distance of 5 feet,
               | some viewers rated 8K content (118 PPD) higher on average
               | than equivalent 4K content (59 PPD), particularly those
               | with better than 20/20 vision (~60 PPD). Most would not
               | notice. It wasn't directly tested but I'd guess most
               | people do notice the difference between 30 and 60 PPD,
               | but only those with above average eyesight will see
               | improvements beyond that.
        
               | Ericson2314 wrote:
               | Nice find. TV image quality is usually so imprecise
               | (compression, lack of text), I would suspected computer
               | displays to be more noticeable.
        
             | theshackleford wrote:
             | I use a 27" 5K display as well, only with contacts. I'm
             | short sighted at -6.75 in each eye. Why would I be unable
             | to wear contacts when using it? If anything its an improved
             | experience as my lenses significantly shrink whatever i'm
             | looking at which the contacts do significantly less.
        
               | mil22 wrote:
               | At -6.75, the impact of the shrinkage caused by
               | eyeglasses would very likely exceed any slight visual
               | imperfections caused by contacts (glare, halos,
               | instability, rotation misalignment for astigmatism, etc.)
               | I'm at -4 and prefer contacts for computer use, but it's
               | right on the point of almost indifference for me.
        
               | Ericson2314 wrote:
               | -2.5 (IIRC, I'm long overdue for a new prescription) for
               | me
        
               | Ericson2314 wrote:
               | Maybe I had bad contacts, but I found that my vision was
               | just worse with them. Couldn't really explain it or
               | describe it. It wasn't like the fuzziness of near-
               | sitedness.
        
               | mil22 wrote:
               | At -2.5, you probably don't get much shrinkage or
               | aberration with your glasses, so they work better for
               | you. For me, at -4 plus strong astigmatism, wearing
               | glasses makes everything look tiny, and circles look like
               | ovals... contacts are a better experience. That said I
               | have tried over a dozen types of contacts over the years
               | and it took me many many attempts to find both a product
               | and a set of lens parameters that worked well enough for
               | my eyes to want to switch from specs. Now I found that, I
               | don't even own spectacles any more.
        
         | lukev wrote:
         | I for one don't notice any quality/resolution difference
         | between native apps and a mirrored Mac screen.
         | 
         | I agree it feels "worse" than a physical screen - it is
         | certainly less crisp. But I ran an experiment, and created a
         | doc with font sizes from 1-15 pt, then viewed it on my physical
         | 24" 4k monitor, and on a mirrored Mac display in the AVP set to
         | the same (virtual) dimensions and distance away.
         | 
         | Interestingly, text became illegible (without leaning closer in
         | either case) for me at around the 6pt mark _for both of them_.
         | Objectively speaking, the size of font I can read is pretty
         | equivalent, although I find myself preferring fonts about 2pts
         | larger on the AVP than on my physical monitor.
         | 
         | I suspect this is because the physical display is able to
         | benefit from precise pixel alignment and subpixel rendering,
         | which the AVP can't. But the "average density" feels pretty
         | equivalent... it somehow feels more an issue of optical
         | sharpness than of "pixel size" (even I know the two are
         | related.)
        
           | cubefox wrote:
           | > I for one don't notice any quality/resolution difference
           | between native apps and a mirrored Mac screen.
           | 
           | I wonder how so different opinions exist on things that
           | should be pretty much the same for everyone.
        
             | Retric wrote:
             | People's eyes vary quite a bit even with corrective lenses.
        
         | jeppester wrote:
         | > Screen sharing from my Mac looks distractingly bad, which is
         | a huge bummer. (AVP apps, by contrast, look fantastic.) No
         | matter how I scale or where I place the space, it just never
         | looks very good.
         | 
         | I think a big part of the difference is that your feed is
         | rotated and skewed raster graphic. That might work fine for
         | photographs and movies. But UIs and text will quickly suffer
         | from washed out edges when you apply transformations to
         | otherwise "perfect" pixels.
         | 
         | The resolution of the pre-transformed image would have to be
         | vastly higher to counteract the fuzzyness.
         | 
         | An even better solution would be if the UI could be rendered
         | directly to the AVP rather than being a screen capture.
        
           | lancesells wrote:
           | The thing I wonder is can't you fix the screen to be straight
           | relative to your head at all times? Or is it always fixed to
           | the environment?
        
             | jeppester wrote:
             | The pixels of the AVP display are wrapped around your eyes,
             | so pixel perfect rendering would result in an out of shape
             | screen (although it would likely be much sharper). Also -
             | from my experience - it doesn't feel good to have a large
             | object unnaturally fixed to the center of your view in VR.
        
       | theogravity wrote:
       | > The Vision Pro has another small problem for spectacles
       | wearers. Contrary to some reports, Apple says that corrective
       | lenses are available for most conditions, including astigmatism
       | (which we weren't sure about in part one), and they also offer
       | bifocals, and progressives. But if you have a prism value
       | included in your prescription, you're out of luck. Prism
       | correction is used to correct for diplopia, or double vision. The
       | easiest way to see if your vision prescription is supported is to
       | use ZEISS's online tool.
       | 
       | As someone that has prism in their glasses, that sucks. I do have
       | custom lenses with prism for my Quest 2. Not sure why apple can't
       | offer it as well, especially if the lens comes from ZEISS.
        
         | mac-mc wrote:
         | I think it's because of eye tracking issues. If you need a
         | prism then you probably have other issues with how your eyes
         | move around and they haven't developed for that yet. They are
         | thinking about it although as shown with the accessibility
         | options. I think they will figure it out eventually.
        
           | LoganDark wrote:
           | I suspect I might need prism lenses, but there's already an
           | eye tracking option that tells it to only use my left eye.
           | Used that option during the in-store demo, and it worked
           | pretty well. If the image in the right eye were adjusted to
           | match my condition then that would've been even better, but
           | my brain already mostly ignores the image from the right eye
           | so it didn't matter that it wasn't.
        
       | seydor wrote:
       | Perceptible resoultion is what 's missing from all these VR
       | goggles. The density of the screen doesn't matter much if the
       | angular resolution isnt great. I was hoping Apple would be the
       | first to rival our actual Retina
        
       | FredPret wrote:
       | It will be so cool once these are miniaturized to those big
       | square 70's glasses or smaller. Maybe contact lenses in some sci-
       | fi future.
       | 
       | I imagine popping on a pair and suddenly you have a huge wrap-
       | around workstation in front of you.
        
       | LASR wrote:
       | I've said this before, but until we have gimballed screens that
       | can reposition a very high-density portion of the display to
       | always be on the eye's fovea, we will not have a good
       | productivity tool headset.
       | 
       | AVP v1 does the eye tracking quite well. I bet real $ that v2
       | will have motors internally to reposition the screens.
        
       | jxy wrote:
       | So the PPD means we only need a factor of 2 denser pixels and we
       | can throw all other 4K screens away. Wait for a factor of 3
       | higher PPD (~ 100?) and we may get rid of all of our single-
       | person-use monitors. I guess I'll wait for Vision Pro 4 to get
       | the "retina display."
        
       | gpm wrote:
       | Disappointing that more analysis isn't put into the lense effect
       | on PPD.
       | 
       | SimulaVR (a competitor) has an extremely good blogpost about this
       | [1] where they argue that the PPD in the central 30 degrees is
       | far more important than the average PPD over the whole headset
       | (because you very rarely turn your eyes more than 15 degrees off
       | center, and your eyes have the highest resolution right in front
       | of them), justifying the same sort of lenses that Apple appears
       | to be using. They claim that this allows them to reallocate
       | pixels for ~45% higher "foveal PPD" than would otherwise be
       | expected.
       | 
       | [1] https://simulavr.com/blog/ppd-optics/
        
       | gattr wrote:
       | I'm waiting for a "monitor-replacement glasses" - show me a
       | device which simulates an equivalent of my current 24"/4K/60 Hz
       | monitor (same amount of pixels, same angular size in my FOV).
       | Since I can touch type, I don't need AR/motion sensing, just the
       | display.
        
       | bredren wrote:
       | Vision Pro is not capable of delivering the level of low-strain
       | fidelity needed to work long hours on anything related editing
       | text. I think it is fair to say a 4k display or near equivalent
       | is the minimum generally needed for this now, particularly for
       | programming. [1]
       | 
       | Spatial Computing is not about arranging windows and using
       | interfaces designed for flat surface devices.
       | 
       | It is about addressing problems using a three dimensional space.
       | Instead of dashboard panels showing graphs in a window floating
       | in the air, there are zones laid out in front of you showing data
       | illustrated using 3D infographics
       | 
       | Apple has had to provide many examples and artful ways to work
       | with windows because it is the only way people understand multi-
       | tasking applications today.
       | 
       | "This device has to be good at window management or it isn't a
       | useful device" is the reasonable thinking of a person who will
       | continue to spend most of their time in flat-land, relating to
       | others who also live in flat-land computing.
       | 
       | I think Apple knows very well that traditional application
       | presentation is not actually where visionOS / spatial computing
       | aspires to be. You can almost derive this from the types of games
       | they put in the Apple Arcade of the app store. These do more than
       | anything else to show where productivity will go.
       | 
       | Even for programming, spatial computing will shine by providing
       | intuitive and interactive visualizations of software systems and
       | infrastructure. Not because it renders an IDE in a window really
       | well. That's what monitors are for!
       | 
       | In some way, how we solve problems has to evolve to make use of
       | what spatial computing can provide.
       | 
       | Focusing on how the Vision Pro falls short of presenting the old
       | interaction model served via hardware designed for that model is
       | missing the true intent of the product and where it is all
       | headed.
       | 
       | Apple is in a tough spot with this, because without handling some
       | of the old way, the Vision Pro doesn't solve any "real world"
       | problems. However, spatial computing solutions to old problems do
       | not really exist yet. Most VP apps are just rebuilt iPad stuff in
       | windows.
       | 
       | I think this is why the home screen apps are locked and Apple is
       | so careful to subjugate apps not designed for VP. Also, why the
       | App Store doesn't just show you a list of all apps published with
       | VP entitlements.
       | 
       | I suspect they already have internal disagreement between product
       | and marketing on what the low bar should be to qualify for an app
       | getting to be listed as a Vision Pro-ready at all.
       | 
       | [1] I use an XDR Pro at my home office and a Dell U2723QE at my
       | coworking space and the 4k is cringe-worthy in comparison. The VP
       | comes nowhere near the experience of the Dell.
        
       | paganel wrote:
       | Has anyone done any studies on what the corresponding carpal
       | tunnel-like diseases will affect the eyes of the people that will
       | start using this device quite a lot.
       | 
       | Meaning that our eyes (and the associated "mechanics" behind
       | them) for sure weren't meant to fiddle with computer windows on a
       | "screen", the same as our hands weren't meant to type on a
       | keyboard/click on a mouse for hours on end, that's why I'm
       | curious about the potential side-effects.
        
         | fckgw wrote:
         | How would it be any different than the normal eye strain from
         | looking at a computer screen? It's essentially the same
         | movements.
        
           | paganel wrote:
           | Never used this thing but as far as I understood you have to
           | "move" your eyes in order to drag a window, or to click on
           | something, or to do anything of the sorts, while when I'm
           | looking on a screen I generally read stuff (which doesn't
           | involve that "much" of an eye movement) or watch a video
           | (which doesn't involve eye movement almost at all).
        
       | it wrote:
       | Isn't it going to give people a terrible case of myopia to have a
       | screen this close to their eyes?
        
         | gpm wrote:
         | The actual distance doesn't matter at all, only the apparent
         | distance after taking into account the optics, your eyes can
         | only see the latter. I don't know the number for the Vision
         | Pro, but it's probably similar to most VR headsets at ~2 meters
         | away, far better than most computer screens that people work at
         | all day.
        
       | holoduke wrote:
       | You need 2x 32k screens per eye to have no pixel visibility.
        
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