[argyllcms] Re: Spectral to LAB conversion in ArgyllCMS (non-D50)

  • From: Graeme Gill <graeme@xxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Wed, 22 Nov 2017 22:09:49 +1100

Edgar Loser wrote:

Hi,

@Graeme:
perhaps you could do something like
    icmXYZ2Lab(ill_wp, Lab, XYZ);
using the illumination whitepoint calculated earlier...

sure, but what's the usage scenario ?

i.e. creating a .ti3 file this way and then making an ICC profile
will result in a bad ICC profile (i.e. wrong Absolute Colorimetric
output, and sub-optimal "Wrong Von Kries" Relative Colorimetric response.)

Cheers,
        Graeme Gill.

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