Is anyone getting better than a 3.0 DeltaE average on their Monitor profile?
Is anyone getting better than a 3.0 DeltaE average on their Monitor profile?
- Subject: Is anyone getting better than a 3.0 DeltaE average on their Monitor profile?
- From: Roger Breton <email@hidden>
- Date: Thu, 12 Jun 2003 08:56:09 -0400
I am testing a whole slew of monitor profiles theses days, created with
various instruments and profiling software.
For my tests, I use Bruce Lindbloom's excellent Lab version of the Macbeth
ColorChecker. I display that image in Photoshop 7 and measure each patch and
compare with the source Lab value of the patch, as shown in the Info
palette.
So far, the best I've been able to accomplish is only an average of DeltaEab
of 3.0. I wont't say with which profiling systems/instrument I got these but
I am curious whether anybody else has ever tested their system that way
(outside Bruce Fraser et al)? And what results are you getting?
What bugs me is when I do the math manually from the profile adapted
relative XYZ colorants to my monitor profile, all colors except the yellow
and blue patch are in-gamut (DeltaE=0). But when I actually measure them,
they don't correspond to the profile prediction? It can't be Photoshop, can
it?
Regards,
Roger Breton
Laval, Canada
email@hidden
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