US approach to CMYK simulation for RGB / Lab late binding workflow
US approach to CMYK simulation for RGB / Lab late binding workflow
- Subject: US approach to CMYK simulation for RGB / Lab late binding workflow
- From: Henrik Holmegaard <email@hidden>
- Date: Tue, 12 Mar 2002 12:48:41 +0100
Martin Bailey <email@hidden> wrote:
I am continually surprised by the contention from both Americans and
Canadians that ISO standards don't apply to them because they are 'European'.
ISO is the International Standards Organization. ISO 12647 is developed by
ISO TC130 WG3, which usually includes roughly equal numbers of
representatives from the USA*, Europe and Japan. It's intended to be just
as applicable in North America as anywhere else, and a lot of work has been
expended in ensuring that it's suitable for ink sets used around the world,
and that positive/negative working doesn't prevent printers matching it.
(I'm cross-posting, but the discussion came out of the ColorSync
Users List and has its roots here.)
The right approach is to ask Adobe to change the naming of its
bundled ISO and TROO1 profiles. This is the first and major stumbling
block: The simplicity of calling the same thing by the same word in
all system ICC profile folders.
If a company uses the ISO and TR001 reference characterization data
to offer its users standards-based simulation and output profiles for
late binding workflows, then it makes little sense not to educate the
user as to the background of the characterization data.
Moreover, FOGRA is right that the concept of targetting solely for
TR001 is not optimal. TR001 though a colorimetric target which
supports separation and simulation within the ICC framework, remains
a gamut smaller than a printing press run to ISO 12647-2 paper type 1
and paper type 2 is capable of.
Personally, I kind of doubt that users realize they are reducing the
gamut of their RGB / Lab originals to much less than may be
necessary. The reason is that they don't have a concept of how many
gamuts the same printing press is capable of. This is going to change
rapidly as 3D gamut comparison becomes standard.
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