I got two monitors. One has a modern DCI-P3 profile, the other, is your average old sRGB. When using the internal viewer for an image, both monitor show the same result. When I use the Windows built-in viewer, the sRGB monitor correctly does not show a difference. Can this be changed/improved?
Apparently, this forum expands/converts the image, I'm uploading the source one as a 7z: dci-p3.7z (4.2 KB)
The viewer has very basic support for color management in PNG and JPEG files only (and Raw, see below), which can be turned on via Preferences / Miscellaneous / Advanced [Image Formats]: use_color_management.
If the monitor isn't sRGB, you need an ICC profile (i.e. .ICC or .ICM file usually). Whether using that or sRGB, you need to configure that option, as Opus won't pick up the monitor profile from Windows automatically.
There is also no support for different monitors using different profiles at this time.
Correct, at least currently. Could change in the future, of course, as we're aware it's very important for some people and will force them to use an alternative viewer.
There's also the question of things like thumbnails, although those are probably less important to people (I assume). And further down the road, things like HDR support, although that's a big mess at the moment that the big players in the software and hardware industry need to sort out first, but don't seem to be progressing with much, if at all. (I'm not sure the idea of calibrated HDR even really exists currently, combining the two things together. HDR displays seem to mess around with colors so much when in HDR mode, whether showing HDR or SDR-in-HDR content. And we're still waiting for sensible, high-res, real HDR monitors for desktop use that don't use tech prone to burn-in with Taskbars and similar.)