Re: Photoshop 6 changing Illustrator colors
Re: Photoshop 6 changing Illustrator colors
- Subject: Re: Photoshop 6 changing Illustrator colors
- From: Mark Burgess <email@hidden>
- Date: Wed, 10 Apr 2002 11:10:43 -0700
At 6:59 PM -0700 4/9/02, Bruce Fraser wrote:
At 10:23 AM -0700 4/9/02, Mark Burgess wrote:
FWIW, SWOP ink black (not rich black) is pretty light.
I have heard that before, but can't find anyone who agrees with it.
I guess you haven't talked to anyone who owns a densitometer,
colorimeter, or spectrophotometer.
Nope.
Come to think of it, I guess I have heard people agree with that
though -- designers who call me over, point to 100%K on-screen and
say, "that's not black (please fix my machine)."
0CMY100K is not a value you're going to get from any reasonable
RGB-to-CMYK conversion. If you spec 100K in an RGB document, you
don't get 100K, you get the RGB equivalent, which is substantially
lighter than RGB 000. Any time you specify a color in a mode other
than the document's native one, the app figures the Lab equivalent
of what you specified (which in the case of SWOP coated is Lab
12,2,0), and translates it to the native mode of the document. In
Adobe RGB, SWOP coated 100K translates to RGB 39,36,37).
Thanks for the interesting explanation, Bruce. The colors I'm having
trouble with are specified as RGB in Illustrator 8 and are being
rasterized as RGB in Photoshop 6.
The black thing stopped being a problem for us when we stopped using
SWOPv2. The main reason I had stop using that is because Photoshop
has no way to specify that the black ink in grayscale mode is the
same black ink that's being used in CMYK, so that 100%K would
translate to 100%Black when going CMYK->Grayscale.
--
Mark
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