Rel vs Abs proofs
Rel vs Abs proofs
- Subject: Rel vs Abs proofs
- From: Roger Breton <email@hidden>
- Date: Tue, 10 Oct 2006 21:28:24 -0400
Sorry to bring this one to life but I think I'm bringing new information to
the table, hoping to spur more discussions on the impact of each rendering
style.
In hardcopy proofing, there are two schools of thoughts regarding
appropriateness of proofing intent. There are those that advocate relative
colorimetric at all costs and those that advocate absolute colorimetric at
all costs.
Ignoring the effect of UV and other optical phenomenon, with AbsCol, the
colorimetry presented to the viewer in the form of the proof (Destination),
matches the colorimetry measured by the originating instrument (Source).
That's by the ICC specs.
With RelCol, the colorimetry presented to the viewer does not match the
originating colorimetry (Source) but is rather "adapted" to the white point
of the hardcopy output (Destination) thereby preserving the "relative
appearance" of the Source.
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.
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?
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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