Re: embedded profiles in PDF/Postscript
Re: embedded profiles in PDF/Postscript
- Subject: Re: embedded profiles in PDF/Postscript
- From: Graeme Gill <email@hidden>
- Date: Mon, 07 Jun 2004 15:22:29 +1000
- Organization: Color Technology Solutions
Chris Murphy wrote:
In InDesign 2 if you embed profiles in CMYK images, and they are not
identical to Document CMYK, each of those objects will get converted at
print time. It doesn't matter what the color management policies are
set to, they get converted. Your option is to selectively, one by one,
turn off color management for each of these objects while preserving the
embedded profile. Fortunately CS rescues this problem but while it still
tracks the embedded profile it ignores it by default and makes it a very
manual process on a per object basis, to reinstitute the embedded
profile if you decide later you want to repurpose the document.
Basically repurposing CMYK in InDesign is so irritating that you'd need
a very high pain tolerance to attempt it which is why most people don't.
I can imagine a really smart application computing a delta E between the
image rendered to the embedded profile vs. rendered with the Document Profile,
and having a threshold where it won't offer to re-render it unless the error is
sufficiently high (ie. allow the possibility of a fuzzy profile match). Of course
it should ideally preserve the black generation in re-rendering (which I'd assume
something like InDesign is incapable of doing).
Graeme Gill.
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