Re: Dot gain again
Re: Dot gain again
- Subject: Re: Dot gain again
- From: Henrik Holmegaard <email@hidden>
- Date: Fri, 6 Feb 2004 12:23:17 +0100
email@hidden wrote:
>Colorimetry and dot gain are two different beasts. You make your CMYK
>profile from measurements of a printed sheet with a characterization
>target. That sheet was printed with a certain dot gain (hopefully
>according to some ISO standard or SWOP etc.). The profiling software
does
>not have to know anything about dot gain, nor could it offer any
settings
>with regard to dot gain.
This is philosophically correct, but it is not correct with regard to
software implementation. ProfileMaker has always tried to take a stand
on the conceptual distinction between device calibration and device
characterization.
Printopen has always allowed adaptations. There are several such
adaptation approaches in the implementation. The dot gain can be
adjusted in order to adapt a base characterization for one process to
another process without re-characterization, as posted many times in
the past. Another adaptation is the ability to emit the
characterization chart with a percentage of the device values such that
it decreases the ink limit in the chart and not in the process which in
turn means that colors the process is able to reach may not be reached
through the profile, as also posted many times in the past.
Thanks,
Henrik
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