Re: Who does the seperations?
Re: Who does the seperations?
- Subject: Re: Who does the seperations?
- From: Terry Wyse <email@hidden>
- Date: Mon, 8 Jan 2007 13:42:14 -0500
On Jan 8, 2007, at 12:46 PM, email@hidden wrote:
My understanding is that a properly profiled RGB file, that is used
to then convert
to different CMYK devices as a last step, is the best way to go -
so i deliver aRGB.
It is very unfortunate that there is a lack of knowledge and
standards out there.
This brings up one of the, I think, major problems with "late-
binding" workflows where the photographer is simply asked to hand off
tagged RGB and thus relying on the prepress/printer to separate the
image properly to CMYK. The issue is one of Rendering Intents. I
think most of us are aware that there can be up to about three
rendering intents (relative colorimetric ("relcol"), relcol w/ bpc
and perceptual) typically used to convert to CMYK. Choice of
rendering intent can be as much an artistic choice as it is
technical. Who better than the "artist" to know whether one should
sacrifice accuracy and overall saturation (relcol) for a more
"visually" or perceptually pleasing result (perceptual)? I can't see
a prepress operator willing to make that decision so I think this
should simply fall on the photographer in this discussion.
My vote would be for the photographer to make the first conversion
(take the first "hit" to CMYK) to a "standard" CMYK color space
(SWOP2006, GRACoL2006, ISO Coated, whatever) and then, if necessary,
for the printer to make the final conversion to their specific press
conditions, preferably via a device link profile. Certainly the big
hit is that first move from RGB to CMYK with a relatively tiny move
from "standard CMYK" to "press-specific CMYK". In fact, if a printer
is at least adhering to either SWOP2006 specs for solid primaries/
secondaries or ISO 12647-2 for GRACoL2006 and ISO Fogra27/39, the
only adjustment to press-specific conditions should be the different
tone curves.
Would any of the prepress/print folks out there be willing to make
the rendering intent decision or perhaps taking the time to use all
three intents and showing proofs...at no extra cost to the job?
Regards,
Terry Wyse
_____________________________
WyseConsul
Color Management Consulting
G7 Certified Expert
email@hidden
704.843.0858
http://www.wyseconsul.com
http://www.colormanagementgroup.com
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