Re: fundamental question - monitor profile as working RGB?
Re: fundamental question - monitor profile as working RGB?
- Subject: Re: fundamental question - monitor profile as working RGB?
- From: Graeme Gill <email@hidden>
- Date: Wed, 10 Dec 2003 11:35:31 +1100
Chris Murphy wrote:
MOST of them assume the display is gray balanced post calibration. That
is they calibrate, and then assume that the calibration was 100%
successful in gray balancing the display, therefore the profile itself
reports R=G=B as being a*=0 and b*=0.
Of the top of my head, Color Vision does this (unless you ask for
Profile only, with no calibration) with both of their products; Gretag
Macbeth unless you built a Large profile; previously mentioned Sony
Artisan; and both Adobe Gamma and Apple's Display Calibrator. I'm pretty
sure this is also the case with Monaco Optix and basICColor display but
don't have profiles handy from either product at the moment.
I'd be rather surprised (read horrified) if any of the packages assume that
a display is grey balanced. It defeats the purpose of profiling. I'm sure
that almost all display calibration utilities aim for a perfect gray balance,
and that very many of the display profiling packages include a calibration
utility. It does not follow that because a package includes a calibration
utility that aims for a perfect gray balance, that the profiling algorithms that
follow it, depend on this being the case.
Graeme Gill.
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