Re:Kodak CMM in Photoshop
Re:Kodak CMM in Photoshop
- Subject: Re:Kodak CMM in Photoshop
- From: Chris Murphy <email@hidden>
- Date: Sat, 21 Apr 2001 17:29:16 -0600
Chris Cox <email@hidden> writes:
>
It's a combination of problems in ColorSync and the Kodak CMM, and
>
could also be a bad profile (we're finding lots of profiles that
>
don't seem to grasp the ICC definition of white in 16bit LAB).
I don't think it's that simple because I've had the problem with all of
the CMM's, but less so with the Apple CMM, and almost none with the Adobe
CMM.
>
And you really should be using the Adobe CMM (ACE) for best results.
I've had a ProfileMaker 3.1.2 profile generate non-zero results with the
Adobe CMM; and then the exact same measurement data building a profile in
3.1.4 fixed the problemw with the Adobe CMM, but it remained with other
CMMs.
Now maybe one can effectively "blame" this on improperly built ICC
profiles, but I blame the CMM's (all of them) more than the profile. The
CMM should be smarter than the profile and not allow the profile (which
is just a text file afterall) to mandate a non-zero result with
perceptual, relative colorimetric, and saturation rendering.
Chris Murphy
Color Remedies (tm)
Boulder, CO
303-415-9932