RE: Strange converion behavior
RE: Strange converion behavior
- Subject: RE: Strange converion behavior
- From: bruce fraser <email@hidden>
- Date: Fri, 4 Feb 2005 17:25:58 -0800
Title: RE: Strange converion behavior
I've seen this fairly often. Bear in mind that the blues that
make up the saturation hole are somewhat unlikely to occur in natural
images unless someone has a very heavy hand on the saturation
control.
The choice of gamut mapping makes a difference to this behavior.
It's ore obvious with ChromaPlus than with either Classic or Colorful,
despite GMB's insistence that the gamut mapping only affects
perceptual rendering.
I haven't found the saturation hole to a problem in doing
conversions, but it does mean you need to be careful if you edit in
that CMYK space.
Bruce
At 7:46 PM -0500 2/4/05, Mike Eddington wrote:
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<4.7 is
now up there with my "gold standard" for blues which has been the
GMB packages.>
So if you
(or anyone out there) perform the same conversion with a GMB
profile (Granger Rainbow in Adobe RGB to CMYK using rel. colorimetric)
you don't get a large hole lookin' thing in the middle of the blues?
Just wondering if its my profile(s). I have decent results with the
perceptual intents, but rel. coloirmetric just looks
whacked.
mike
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