RE: PS CMYK Conversions
RE: PS CMYK Conversions
- Subject: RE: PS CMYK Conversions
- From: "Robert Rock" <email@hidden>
- Date: Fri, 15 Aug 2008 10:56:50 -0400
- Organization: P. Chan & Edward, Inc.
Okay then, moving on, but in the spirit of Roger's comment about being
flexible and adaptive to each situation, I have a very specific question
about one of my situations.
I've addressed this group before about creating offset printing CMYK
profiles with matte lamination. And I understand all the nuances of light
properties that come into play when traveling through a matte lamination,
but let's for this discussion assume that is not an issue here. Many have
told me that I will never get a GREAT profile from laminated substrates, but
there will be SOME improvement over no profile at all.
I've press proofed the targets, matte laminated them, and have scanned them
(I used a DTP70 automated scanner). I'm now ready to take the data and
create the CMYK profile (using ProfileMaker 5, but also have Monaco Profiler
at my disposal).
My intended workflow is as follows:
1) Go through all "normal" prepress process. Client making all necessary
corrections and reproofs until we have a final okay. The matte lam profile
has not yet come into play.
2) Set that proof aside. Convert our files to the new matte lam profile and
press proof again. I will assume that this proof will look quite strange as
the colors will be more saturated and vibrant to account for the matte
lamination that has not yet been applied. This is the press proof, as odd as
it might look, that the pressman will run too.
3) Intended result: The final press sheets when laminated should be an
improvement over our previous results of get dulled and flat colors after
matte lam.
I've played with this in the past and although not perfect, the results WERE
better than not using these custom profiles at all. I did run into some
issues where the results were a bit muddy, which some of you pointed out
were because of the settings given to me by the Asian printers (Max Avail
Black 100%, Max Total Ink 370%-400%). Many of you said that was much too
high and would cause problems. But once we played with that a bit, results
were improved.
So, I'm getting ready to get into this again as it's been a couple years
since our last profile. I'm not nearly as expert as most of you here, so
PLEASE speak up if you have any suggestions or advice. Especially anything
directly applicable to ProfileMaker 5. Any suggested starting points for GCR
or UCR or Max Black or Max Ink? I ask this only because the Asian printers
eyes usually glaze over when I try to get this information from them.
Thanks in advance for your patience and help.
Bob Rock
P. Chan & Edward, Inc.
-----Original Message-----
From: colorsync-users-bounces+bobrock=email@hidden
[mailto:colorsync-users-bounces+bobrock=email@hidden] On
Behalf Of Roger Breton
Sent: Friday, August 15, 2008 9:43 AM
To: ColorSync
Subject: Re: PS CMYK Conversions
Bottom line, this whole thread was started because someone questioned the
validity of converting images between RGB and CMYK in Photoshop. It's
interesting how it turned into image portability issues and press gamut
bashing. People, there is no such thing as one universal solution or
workflow for color. There are just a myriads of well-justified color needs!
It takes good judgement to decide on a given policy in each case and we
should not succumb to ideals of universalism and absolutism.
Roger Breton
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