5 ms·

> back then [in 2009] there wasn't much awareness of this issue I haven’t noticed too much change in the general awareness of this problem between the 1990s an

> back then [in 2009] there wasn't much awareness of this issue I haven’t noticed too much change in the general awareness of this problem between the 1990s and today. Experts have always known the right thing to do and people have been talking about these problems as long as there has been image processing, (e.g. Poynton’s Gamma FAQ dates from sometime before 1998 http://poynton.ca/notes/colour_and_gamma/GammaFAQ.html http://poynton.ca/notes/colour_and_gamma/GammaFAQ.html) but it’s new to everyone at some point, and newcomers perennially screw up. The annoying thing is that there are folks who continue to screw up (like Adobe Photoshop) who should really know better. Backwards compatibility shouldn’t be an excuse to continue with broken implementations for decades.

lstamour 8y ago
Oh, the broken implementations don't stop at backwards compatibility -- Lightroom CC, their new Cloud product, last I checked, prefers to send sRGB to Photoshop (!) unlike the traditional Lightroom which fully supports preserving embedded colour profiles when exporting. It's been a couple weeks since I looked into this but the instructions in this post https://lightroomkillertips.com/keeping-your-color-consistent-between-lightroom-and-photoshop/ https://lightroomkillertips.com/keeping-your-color-consisten... apply to Classic Lightroom if I recall correctly, and the modern "cloud" Lightroom CC only exports wide gamut correctly when set to export as uncompressed TIFF 16-bit. Everything else tries to export as sRGB automatically, which sucks for print or DCI-P3 workflows. Also, I'm trying to find details on Apple's P3 profiles in how they differ from standard projection profiles for the movie industry to maintain compatibility with sRGB gamma, but there's not as much online as I expected about it. In my search for info, I came across https://ninedegreesbelow.com/photography/lcms-make-icc-profiles.html https://ninedegreesbelow.com/photography/lcms-make-icc-profi... which seems like a useful resource for Linux/FLOSS folks. Ah. Found it, a source for the differences between "Display P3" and movie-theatre P3. Here's a link to the relevant section of the video, on colour spaces: https://developer.apple.com/videos/play/wwdc2016-501/?time=2740 https://developer.apple.com/videos/play/wwdc2016-501/?time=2... And here's a good discussion on why D60 was chosen for film projection while D65 is used by modern computers for sRGB/Rec 709 compatibility: https://www.liftgammagain.com/forum/index.php?threads/dci-p3-theatrical-vs-d65-different-white-points.11109/ https://www.liftgammagain.com/forum/index.php?threads/dci-p3... and here's a bit on the technical details of ICC profiles and CIE XYZ numeric representations of colours: https://ninedegreesbelow.com/photography/xyz-rgb.html https://ninedegreesbelow.com/photography/xyz-rgb.html
- mark-r 8y ago
  https://apple.stackexchange.com/questions/252159/what-color-space-is-iphones-7-wide-color-display-p3 https://apple.stackexchange.com/questions/252159/what-color-... describes the difference between P3 and what Apple uses.

lstamour 8y ago

Oh, the broken implementations don't stop at backwards compatibility -- Lightroom CC, their new Cloud product, last I checked, prefers to send sRGB to Photoshop (!) unlike the traditional Lightroom which fully supports preserving embedded colour profiles when exporting. It's been a couple weeks since I looked into this but the instructions in this post https://lightroomkillertips.com/keeping-your-color-consistent-between-lightroom-and-photoshop/ https://lightroomkillertips.com/keeping-your-color-consisten... apply to Classic Lightroom if I recall correctly, and the modern "cloud" Lightroom CC only exports wide gamut correctly when set to export as uncompressed TIFF 16-bit. Everything else tries to export as sRGB automatically, which sucks for print or DCI-P3 workflows. Also, I'm trying to find details on Apple's P3 profiles in how they differ from standard projection profiles for the movie industry to maintain compatibility with sRGB gamma, but there's not as much online as I expected about it. In my search for info, I came across https://ninedegreesbelow.com/photography/lcms-make-icc-profiles.html https://ninedegreesbelow.com/photography/lcms-make-icc-profi... which seems like a useful resource for Linux/FLOSS folks. Ah. Found it, a source for the differences between "Display P3" and movie-theatre P3. Here's a link to the relevant section of the video, on colour spaces: https://developer.apple.com/videos/play/wwdc2016-501/?time=2740 https://developer.apple.com/videos/play/wwdc2016-501/?time=2... And here's a good discussion on why D60 was chosen for film projection while D65 is used by modern computers for sRGB/Rec 709 compatibility: https://www.liftgammagain.com/forum/index.php?threads/dci-p3-theatrical-vs-d65-different-white-points.11109/ https://www.liftgammagain.com/forum/index.php?threads/dci-p3... and here's a bit on the technical details of ICC profiles and CIE XYZ numeric representations of colours: https://ninedegreesbelow.com/photography/xyz-rgb.html https://ninedegreesbelow.com/photography/xyz-rgb.html

mark-r 8y ago
https://apple.stackexchange.com/questions/252159/what-color-space-is-iphones-7-wide-color-display-p3 https://apple.stackexchange.com/questions/252159/what-color-... describes the difference between P3 and what Apple uses.