I have been making scanner profiles using Eye-One Match and a variety of targets, including the supplied target and a chaotic TC9.18 RGB target.
Using any target, I find a color cast is introduced. My targets paper-white is 96.8 / /1.4 / -8.2, and I have a gray-strip that measures 66.3 /-0.3 / -0.6. All measurements have been done with an i1-Pro. When I scan the target, create a profile with a reference file created in Gretag’s Measure Tool, and assign the created profile to the scanned target, Photoshop’s info window indicates the white value as 99 / -1 / 2, and the gray as 68 / -2 / 4. The visual appearance, as well as prints, confirm this difference. (My monitor is profiled, also using the Gretag Eye-One Match).
I have contacted Gretag, and have spoken with Tech Support, but without any substantive answer for over 2-weeks now. They have acknowledged the question, but haven’t been able to tell me if this is within the tolerance of the profile software, is a problem with methodology, or inherent in the software.
I imagine it has to do with the “settings” of the profiling software, but Eye-One Match does not allow access to these. Gretag tells me the Profile Maker 5 uses the same algorithms and will construct the same profile.
Any thoughts? Similar or different experience?
Pertinent files can be downloaded at: