[argyllcms] Re: R: Re: Neutralize Grey Axis

  • From: Graeme Gill <graeme@xxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Tue, 11 Jan 2011 11:50:29 +1100

Gerhard Fuernkranz wrote:


0.237950 0.136584 0.237256 0.300383 [CMYK] ->  Lut ->  53.216939 1.381824
-2.776611 [Lab]

As we can see, when printing PCS Lab [50,0,0] with perceptual intent,
the resulting absolute a* and b* are still not zero (or close to zero).


Hi Gerhard,
        I think the effect is being undone somewhere by the perceptual
intent selection. (Possibly the neutral axis alignment code is doing this.)

You can get something like the desired effect by overriding the
perceptual table intent with -taa (Absolute appearance intent).

Graeme.

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