As an experiment, I tried setting the 'Wide Gamut RGB' profile (i
believe it comes with Photoshop) as the monitor profile on my iMac
(white 20" Intel, Tiger). My expectation was that all programs would
go "Oh, this gentleman has a really wide-gamut monitor, let's
desaturate our colour output so things look right on it!", thereby
rendering everything on screen rather greyish. This did not happen;
there was no noticeable change in colour saturation on screen.
I have also tried the same thing with a "trick" profile I created by
taking an sRGB profile and exchanging the rXYZ and bXYZ tags in the
file. Assigning this profile to an image gives really strange
colours, but setting it as the monitor profile has no apparent effect
at all.
I was also expecting that if I run the Colorvision Spyder calibration
program twice with different gamma values (but all other parameters
constant) and then flipped between the two profiles, an image
displayed by a colour managing program, such as Preview.app, would
stay the same on the screen (my rationale being that the two profiles
would load different data into the video system LUT:s, but that this
would be compensated by the software reading the *TRC tags from the
profile). Again, this did not happen; image appearance changed
noticeably.
Clearly, this does not work the way I expected it to. So how *does*
it work? Are the *XYZ tags in the monitor profile used at all? What
about *TRC?
-- Ture Pålsson (colourfully confused)
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden
