Re: Rel vs Abs proofs
Re: Rel vs Abs proofs
- Subject: Re: Rel vs Abs proofs
- From: Rich Apollo <email@hidden>
- Date: Wed, 11 Oct 2006 14:30:13 -0500
Would it make sense to argue that, in RelCol, users nevertheless
expect the
RelCol of their harcopy proofs to be matched absolutely?
Discounting the
absolute white point of the proofing substrate.
Yeah. I think that's a fair assessment of the expectations.
Last but not least, this is more of a printing-related type of
question,
would it make sense to argue further that, in order to match a
RelCol proof,
as compared to match an AbsCol style of proof, everything else being
constant, a printing press will have to expend more ink? Because
the colors
to be matched are, for all intents and purposes, more saturated?
A client of mine recently made the switch from AbsCol proofs to RelCol
proofs and I have the distinct impression that, in order to match
this new
generation of proofs, the press needs to expend more ink, all of a
sudden.
Is that consistent with anyone's experience?
No. I don't think this is accurate. If the papers don't match, then
the color gamut will be skewed in one direction or another. Consider
the idea of reconfiguring say AdobeRGB to a 5000k white point. The
gamut wouldn't change in volume, but some things would get shoved
around.
If your press stock is warmer in tone than your proofing stock, then
you're gonna' have problems with quarter tones being too warm on
press and may have issues with blues being saturated enough and
greens and reds going warm.
Simplest test to run is output color managed proofs of the same
profiling target you used on press; utilizing each rendering intent.
Measure them all and see which one comes closest to the press numbers.
Rich Apollo
G7 Certified Expert
314-344-1144
email@hidden
www.prioritylitho.com
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