Post B18bhssXKcOxVwZzF2 by rgarner@mastodon.social
 (DIR) More posts by rgarner@mastodon.social
 (DIR) Post #B18YiTZya0QXTcULuC by rgarner@mastodon.social
       2025-12-11T10:41:33Z
       
       0 likes, 0 repeats
       
       HDR JPG test (this isnae gonna work, is it)
       
 (DIR) Post #B18YiV0bGVJluTx82i by bazkie@beige.party
       2025-12-11T10:45:41Z
       
       0 likes, 0 repeats
       
       @rgarner is that an apollo capsule or are you just happy to see mei'm not sure if it's HDR tho
       
 (DIR) Post #B18YiWPS3an6FqaUPw by rgarner@mastodon.social
       2025-12-11T10:46:00Z
       
       0 likes, 0 repeats
       
       @bazkie if you're not sure, it isn't
       
 (DIR) Post #B18YiXTk57ojZRbQkC by rgarner@mastodon.social
       2025-12-11T10:46:53Z
       
       0 likes, 0 repeats
       
       @bazkie HDR to me is like a magic "makelookfuckinggood" filter
       
 (DIR) Post #B18YiYS0T41UaLnYg4 by bazkie@beige.party
       2025-12-11T10:47:24Z
       
       0 likes, 0 repeats
       
       @rgarner well as I understand it, you need a special monitor to support it?
       
 (DIR) Post #B18YiZDVcS1Kxg1Uie by m0xEE@nosh0b10.m0xee.net
       2025-12-11T10:49:02Z
       
       0 likes, 0 repeats
       
       @bazkie@beige.party @rgarner@mastodon.socialDoes normal Jay Peg even support HDR?
       
 (DIR) Post #B18bhssXKcOxVwZzF2 by rgarner@mastodon.social
       2025-12-11T11:11:59Z
       
       0 likes, 0 repeats
       
       @m0xEE @bazkie there is an HDR JPG variant Photomator exports, apparently
       
 (DIR) Post #B18bhuEYIFbdiVt5CC by rgarner@mastodon.social
       2025-12-11T11:12:47Z
       
       0 likes, 0 repeats
       
       @m0xEE @bazkie
       
 (DIR) Post #B18bhvNo1KbPHVDzG4 by m0xEE@nosh0b10.m0xee.net
       2025-12-11T11:44:56Z
       
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       @rgarner@mastodon.social @bazkie@beige.partyI see!From what I know, original JPEG doesn't support HDR, JPEG2000 does, and of course JPEG XL and other more recent codecs.Turns out however, there's this Google metadata hack: https://en.wikipedia.org/wiki/Ultra_HDRMastodon and most probably other Fediverse software too strip the metadata for privacy reasons, so HDR JPEG with this hack turns into a normal one.I'm not a expert, but it seems to me that it works in a way similar to HDCD audio: audio with higher dynamic range packed into the same bit width, adding "magic" sequences that compatible encoder could recognise and translate back.HDCDs were compatible with normal CD players with caveats – you could play the CD, but it could sound worse than even the same music in normal CD quality due to artifacts caused by "magic sequences" — it didn't not turn audio into complete gibberish, the songs were still recognisable — a decent compromise.Now that I look at your photo, some colours do seem weird — namely the window in the background and the overbright part on the capsule. Could be due to some data missing that was supposed to be in metadata, but got stripped.
       
 (DIR) Post #B18d1szkhyztcZ3XKC by rgarner@mastodon.social
       2025-12-11T11:52:31Z
       
       1 likes, 0 repeats
       
       @m0xEE @bazkie when I push into the highlights I'm making sure it's bright enough to stop your retina from processing the edges of the highlight and relying on the halation your own eye generates. And then when that gain mapping info isn't decoded, you get the flat yellow nonsense :)