Re: Weird Color Behavior?
Re: Weird Color Behavior?
- Subject: Re: Weird Color Behavior?
- From: bruce fraser <email@hidden>
- Date: Sat, 21 Feb 2004 19:28:01 -0800
At 10:05 PM -0500 2/21/04, Roger Breton wrote:
Why make an exception for the document white? I, personally and a host of
other people I can think of, would not be offended by an sRGB document
appearing slightly bluish on a D50-calibrated monitor and a ProPhotoRGB
document appearing slightly yellowish on a D65-calibrated document. It isn't
like the infamous scum dot exception, you know.
With all due respect, I'd like some of whatever it is you've been
smoking. Try doing an absolute colorimetric conversion from Adobe RGB
to your 5000K monitor profile, then tell me in what way it's useful.
The object of the exercise is to get the working space to display as
close as possible to identically on everyone's monitors. If you look
at the monitor, your eye adapts to monitor white, whether or not you
want it to. Hence a relative colorimetric conversion from working
space to monitor space lets us all see the same thing irrespective of
whether we prefer to calibrate our monitors to 5000K, 6500K or any
points north, south, or inbetween.
This is not "making an exception for the document white" - it's
acknowedging the simple fact that our vision is automatically biased
by our monitor white point, and exploiting same fact of life to make
sure that when I send you a perfectly neutral Adobe RGB image, you
don't immediately conclude that it has a blue cast and screw it up.
That's what would happen if you used absolute colorimetric
conversions for display.
"Blue" and "yellow" are not overstatements! Do the conversions
yourself if you don't believe me-we aren't talking "slightly bluish"
and "slightly yellowish."
But what could conceivably be the point of building an imaging system
that displayed white as something other than white, outside of
proofing situations where you want to see the impact of the paper
color?
--
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