[argyllcms] Re: White point or black point adjustment not working

George Willegers wrote:
After just doing 2 and 3 I now have the following (apart from white looking like pink): 
Black = XYZ   0.25   0.20   0.29
Grey  = XYZ  24.66  26.08  29.56
White = XYZ 113.08 119.22 137.37
1%    = XYZ   1.58   1.65   1.99

 Current Brightness = 119.22
 Target 50% Level  = 22.59, Current = 26.08, error =  2.9%
 Target Near Black =  1.19, Current =  1.73, error =  0.5%
 Current white = x 0.3059, y 0.3225, VDT 6941K DE  0.3
Target black = x 0.3059, y 0.3225, Current = x 0.3028, y 0.3160, error = 3.65 DE 

It's a puzzle a to why it should look pink. According to the
instrument, it is quite blue (approx. 7000K white point), and
very close to the daylight locus (0.3 delta E), which is the
reference for neutrality. Either something is wrong with
the instrument, or environmental factors are influencing the
subjective impression.
When adjusting the white point, it started with R+ G-- B+. After decreasing the green level a bit this changed into the reverse (R- G++ B-), sometimes changing into R= G= B= without touching the monitor controls. I still think this is odd. 

Why do you think this is odd ? The real world has noise and non-repeatability
in it.

Graeme Gill.

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