[HN Gopher] LaborBerlin: State-of-the-Art 16mm Projector
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LaborBerlin: State-of-the-Art 16mm Projector
Author : audionerd
Score : 87 points
Date : 2025-06-21 20:08 UTC (2 hours ago)
(HTM) web link (www.filmlabs.org)
(TXT) w3m dump (www.filmlabs.org)
| moonshinefe wrote:
| Thanks for sharing. I was a projectionist at a local theater in
| my 20s, and I have very fond memories of working with the older
| machines. There was something so satisfying working them on
| Summer nights in the booth alone.
|
| The move to digital projectors everywhere was very shortly after
| I left.
|
| Always cool to see people help keep the medium alive.
| PaulHoule wrote:
| Circa 1990 I was on the movie committee of the student council
| at my undergrad school and had the job of periodically checking
| out a 16mm projector from the library and lugging it across
| campus to the student union building where we'd show a movie
| every Friday. I remember showing _Rebel Without a Cause_. We
| had a video projector in the same room though and had found it
| was cheaper to get a license to show VHS tapes which was a lot
| easier on the projectionist although it was much worse quality.
| M4rkJW wrote:
| Neat stuff! I have a ton of 8mm and some 16mm film to archive,
| perhaps this is a good first step towards an open-source film
| scanner.
| Animats wrote:
| 8mm film scanners are so common they're available at Walmart.
| There are lots of DIY film scanners described on Youtube. They
| don't have to run fast and they don't need a pull-down
| mechanism, so they're simple devices.
| sho_hn wrote:
| Super awesome project. As an embedded engineer who grew up in the
| arthouse/program cinemas of Berlin, I wish I had heard about this
| two years ago. Would have loved to help out.
| sandworm101 wrote:
| Be careful about using AOI cpu coolers for other purposes. They
| are enclosed units subject to evaporation and air infiltration.
| Fluid levels will drop over time and refilling is difficult.
| Also, be wary of orientation. You want to make sure that the
| inevitable bubbles are not repeatedly drawn into the pump. So you
| want to position the radiator with the in/our ports lower, giving
| a low-turbulence chamber towards the top of the radiator for
| bubbles to accumulate.
|
| Opinions differ, but 800+watts through a 2-fan radiator, in an
| already hot environment, is likely not enough. If this was an
| 800-watt CPU I would be going with either some wickedly powerful
| fans or 2x as much radiator.
| the_third_wave wrote:
| One thing seems odd: it takes an 800W LED to double the light
| output of a 250W halogen bulb. Normally LED is far more efficient
| than halogen so I wonder why the opposite is true for this
| project.
| Animats wrote:
| The LED lamp system they built looks like it was designed by an
| overclocker.
| sandworm101 wrote:
| An 800w LED is not as perfect a point source. They are loosing
| lots of light that isn't focusable. See how in the comparison
| picture that there is insane light bleed out the side from the
| LED projector. The older projector benefits from a hundred
| years of optimization of how to focus a lightbulb into an
| image. The LED rig is starting from scratch with a source that
| isn't meant for focus onto an image.
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(page generated 2025-06-21 23:00 UTC)