[argyllcms] question about monitor calibration
- From: Alberto Ferrante <alberto.ferrante@xxxxxxxxxx>
- To: "argyllcms@xxxxxxxxxxxxx" <argyllcms@xxxxxxxxxxxxx>
- Date: Fri, 18 Jan 2013 14:08:20 +0100
Dear all,
I would like to ask a clarification about monitor calibration. In
particular, I am interested in understanding better what happens when a
viewing condition adjustment (-a) is used in dispcal. If I specify -a
11, that is the number measured through my colorimeter, the calibration
profile makes the gamma visibly higher (i.e., the images look visibly
darker). If I use a color-managed application and I use the color
profile (obtained through dispread) the images gets back to the original
gamma.
Now I have two questions:
1) why is the image getting darker by using -a? Shouldn't it be lighter
to cope with a non dark room?
2) When the color profile the luminosity correction is disregarded: this
does not make sense to me, because it is like assuming that, when a
color-managed application is used, the lights in the room get adjusted.
Can anybody explain this strange (to me) behavior?
Best regards,
Alberto
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