Re: Dot gain again
Re: Dot gain again
- Subject: Re: Dot gain again
- From: Graeme Gill <email@hidden>
- Date: Fri, 06 Feb 2004 15:46:00 +1100
- Organization: Color Technology Systems
email@hidden wrote:
Looking at the ICC.1:2001-12 specs I can not find any reference to Dot
Gain. I have often wondered at the lack of control over this very
important aspect when generating cmyk profiles. This is one of the
attractive aspects of Photoshop dot gain tables. I am glad to see some
discussion about this on this list. (I am not trying to be provocative by
bringing up Photoshops dot gain tables, so please lets not drift down that
road).
Dot gain has nothing directly to do with an ICC profile. For the ICC
profiles primary function,
which is to describe how device values relate to objective color, the
dot gain etc. is completely
irrelevant. What counts is what the instrument reads. It can be very
useful to include device
settings in the ICC profile, so as to have a record of the device setup
under which the profile is
going to be valid, but this is a secondary issue.
ICC is primarily intended to be "closed loop", where instruments measure
the results objectively, and
the idea is to fully characterize the device, so that the loop is closed
automatically, by inverting the
device characterization when linking with an input profile.
Graeme Gill.
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