Re: U.S. Web Coated (SWOP) v2 using GCR or UCR?
Re: U.S. Web Coated (SWOP) v2 using GCR or UCR?
- Subject: Re: U.S. Web Coated (SWOP) v2 using GCR or UCR?
- From: bruce fraser <email@hidden>
- Date: Wed, 5 Apr 2006 08:48:08 -0700
At 4:36 PM +0100 4/5/06, Phil Cruse wrote:
Matt, Roger & others
I think we can assume that adjustments in PhotoShop to UCR/GCR, Dot
Gain,etc. are not based on any modern ICC Profile at all (SWOP,
EuroWhatever, etc.) regardless of whatever CMYK profile is assigned.
Are they in fact based on ICC profiles and ICC Colour Management at
all? I suspect they go back to some old prehistoric non-ICC DNA
surviving in the software (Neanderthal perhaps?).
They are not based on ICC profiles or ICC color management. Back when
Photoshop introduced CMYK, there was no ICC and ColorSync was highly
experimental. This is that technology. All it knows about is
primaries, secondaries, CMY overprint, and dot gains.
I've been advocating turning Custom CMYK into a method for editing
and regenerating at least the Adobe-supplied CMYK profiles, and
ideally any v4 CMYK profile since v4 profiles contain the measurement
data in the relcol tables. The people I spoke to at adobe were fairly
enthused about the first option but nervous about turning Photoshop
into an actual profiling tool.
More often than not, though, people just want SWOP with a slightly
different KGen or TAC. Door #1 would give them that. I doubt we'll
see it next year, but I hope to see it sometime this decade.
It would be helpful if I weren't the only Photoshop user asking for
this feature....
(hint, hint)
Bruce
--
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