I’m using a ColorMunki Display to calibrate and characterize my monitor, which of course results in the creation of a .icm file, thereafter set as the default for the monitor.
At RawTherapee>Preferences>Color Management>Monitor, one must, according to RawPedia, “set the “Default color profile” to the ICC file you generated when calibrating and profiling your monitor”. Or, quoting again RawPedia, “you can have RawTherapee try to auto-detect the profile by using the ‘Use operating system’s main monitor color profile’ option, which relies on the
_ICC_PROFILE X11 atom being set correctly.” However, checking the ‘Use operating system’s (…)’ checkbox does not change what’s listed just above it, in the ‘Default color profile’ drop-down menu, so there’s no real confirmation that it is working.
XnView MP has, what I think, is a similar function, listed at XnView MP>Tools>Settings>General>ICC, where one can check “Use ICC profile for monitor (slower).” When that box is checked, the current monitor profile is immediately shown in a box labelled “System” just below. So, I know that XnView can automatically find the screen profile.
Finally my questions:
Does that mean that this rather cryptically-entitled "
_ICC_PROFILE X11 atom" is correctly set by ColorMunki Display, and thus I can just check the “Use operating system’s main monitor color profile” check-box in RawTherapee, and trust it to always find the most up to date color profile?
And… Why does this need to be done? Why is it that I have to indicate my monitor’s icm profile to RawTherapee, but I don’t have to indicate it to Microsoft Word, or Adobe Reader, or Minesweeper, or… ?
I know the answer surely lies within the rabbit hole called color management, but I can’t wrap my head around this. Wouldn’t the monitor’s icm file just correct whatever color info it gets from any program? I mean, that process enters the game downstream of any one program, no?
… Photography was so simple before I started printing…
Thanks in advance for any light you can shed!