[argyllcms] Re: False white point

  • From: Graeme Gill <graeme@xxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Thu, 17 Dec 2009 01:32:51 +1100

Kompatscher Klaus wrote:
using the attached data and creating a profile with calprof I get a white point 
of L86 a-8 b0
which does not correspond to the real media white.


How are you determining the "real" media white ?

The single white patch in the data set has a value of Lab 85.059164 -8.124163 
using D50 illuminant and the 1931 2 degree observer,
while the smoothed profile white point is 86.311126 -8.360063 -0.733073,
a difference of 1.296812 delta E. This seems perfectly normal.

Graeme Gill.

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