[argyllcms] Re: Conversion omitting/locking device colorant
- From: "Martin Weberg" <martin.weberg@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Thu, 15 Jan 2009 00:07:19 +0100
On Wed, Jan 14, 2009 at 13:21, Roger wrote:
> Are you trying to use the gray balance press calibration method through a
> standard characterization chart, like ECI2002?
No, just making a grey control strip.
> If you do, don't forget to
> use the 40m 40y for the Lab to CMY look up. This is the method advocated by
> Heidelberg and is now carried into their Near Neutral Calibration Utility.
I don't now much about Heidelberg's utility. I know that CMY 50 40 40
is a typical target for grey balance (sheet-fed offset). I guess,
based on the data from a calibration print (like ECI2002 or IT8.7/4)
CtP correction curves could be calculated to achieve grey balance at
i.e. 50 40 40.
> I'd wish for Argyll to also calculate some curves ...
Yes, that would be nice.
Martin Weberg
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