AW: Standard CMYK Proofing
AW: Standard CMYK Proofing
- Subject: AW: Standard CMYK Proofing
- From: Ulf Grossmann <email@hidden>
- Date: Thu, 21 Mar 2002 21:03:32 +0100
Hi Scott,
I can answer some of your questions:
Scott wrote:
On a related note. When separating to CMYK should the profile used for
separation also be used as the reference for proofing?
The reference for proofing is the Profile of the press. This profile you can
use for separation, but sometimes it is better to separate with an special
profile which takes more care about the Gray and blue (gets purpel).
Scott wrote
Or should a
conversion be taking place from the color space of the file to the
simulation or reference profile used on the output device? Lets take for
instance the U.S. Sheetfed Coated profile that photoshop uses. If I were
to
separate using this profile but then used the BestRef5 Profile as the
reference on the Bestcolor, should there be a conversion between these
two
profiles in order to avoid a mismatch?
BestRef5 is an "european profile" and matches to one of our sample prints we
shipped with our software. This profile has only 15% Dotgain and not 20%
like the U.S. Sheetfed coated profile. It wont be a good idea to use our
BestRef5 as Reference Profile for the US market. It is better to use the
official SWOP Profiles or the profile of the press you use.
Scott wrote:
There seems to be so many ways to convert and so many references for
proofing.
For proofing you use the allready converted files (the files you send to the
printing company). Don't convert the files special for the proof! If you use
the correct Reference Profile (from the press or one of the global profiles)
the press can reach this proof.
Ulf Grossmann
Best GmbH
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