[argyllcms] Re: colprof and proofing purposes

  • From: Graeme Gill <graeme@xxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Tue, 13 Oct 2009 22:50:27 +1100

Michael Schulz wrote:
I'm talking about the default option (OFPS) - with the result of mostly dark
patches, the -R option which gives patches with a perceptual space
distribution and the -c option using a previous profile.


When profiling a CMYK device there will be a large number of dark
patches because the various levels of K need to be explored, so
that the color of any level black separation can be predicted.

The default OFPS is generally a good place to start, it's main
weakness in V1.0.4 being that it doesn't place enough
test patches on the gamut surface, and doesn't take any
account of a provided profile. Another combination
that may work well is to provide a previous profile
and select a moderate amount of adaptive test point
placement (-A0.2 say).

[V1.1.0 will improve on this a great deal.]

Graeme Gill.

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