[argyllcms] Re: Monitor profile

Roger Breton wrote:


Somehow, when dispread launched, after calibrating the DTP94, applying the
.cal file, the screen dramatically changes appearance. I usually have my
desktop filled with a gray background image. This image turned sort of
bluish-greenish when dispread launched. And I could see the white point
going very yellowish.


This is the effect of the vcgt calibration curves being applied
to the display for profiling it.

You can manually verify the calibrated white by doing the following:

Load the screen with the calibration curves using dispwin, ie:

        dispwin blah.cal

Display a white test patch using the loaded vcgt:

        dispwin -m

Leave this running, and on another terminal session, run spot read

        spotread -yl -a

(For a non Eye-One display 2 the -a flag will do an absolute emissive
 reading and display the white point.)

and read the white. Does it agree with what dispcal was targeting ?

Graeme Gill.

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