Re: Looking for BestColor Expert
Re: Looking for BestColor Expert
- Subject: Re: Looking for BestColor Expert
- From: Henrik Holmegaard <email@hidden>
- Date: Thu, 29 Mar 2001 10:54:39 +0200
This business of being BESTColor Expert (with capitals -:)) is a
little above my head, but in commonsense terms you are asking whether
to apply the sourceRGB to destinationCMYK transform in Pshop6 or in
BESTColor 4.2.
The post suggests you aren't using the ReferenceCMYK to PaperCMYK
workflow for a CMYK to CMYK proof since you only do fine art prints.
This means you are doing full gamut presentation prints and not
cropped gamut proof prints.
One part of your question seems to be, What happens if the
ReferenceCMYK and PaperCMYK are the same profile? To be honest I
don't know, but in this case the RIP should arguably ignore the
ReferenceCMYK profile and apply only the PaperCMYK profile, or you'd
get an identity conversion.
Another part of the question is, Does the RIP apply the linearization
if the profile it internally links to is not selected? That I don't
know either, but I would assume not.
So if you send tagged RGB to the RIP, I'd say to activate your
Printopen 4 Paper Profile and set the rendering intent to Perceptual
in the BEST RIP (it now has this option).
If you send SourceRGB to PaperCMYK converted in Pshop, deselect both
perceptual and paper simulation. (To be sure of the buttons I'd have
to go upstairs and launch the black IBM box).
The underlying confusion comes from the fact that the RIP was built
as a simple color server to handle the back branch CMYK to CMYK
conversion that didn't work in any application other than Linocolor
until recently. This means the UI talks to users about proofing
though what you want is to have only the sourceRGB to presentation
printCMYK conversion, so in reality your inkjet Paper Profile should
be your Reference Profile, but the Reference Profile part of the UI
doesn't support a base linearization (silly for a press, of course).
Hope some of this helps.