----- Original Message -----
From: "Joaquim Carvalho"
Subject: Re: monitor calibration
Color perception is a relative and subjective thing, if you use a
computer in a room where the walls are painted in a redish tone and have
your monitor matematically accurately calibrated using a
monitor-emitted-light-measuring-device then the matematically defined
grays on your monitor will not look gray to you, would this be a good
thing? Then you would choose a different "color temperature" to suite
your "mood" but what is the accuracy of that? There may be one absolute
gray and absolute black and absolute white but they change a lot with
the environment and the age of your eyes.
Getting the absolute white white is the only thing where a hardware
calibrator can do a more matematically accurate calibration than a
software one but even for that I prefer to visually set the neutral gray
levels so that I see them as grey and this depends on the environment.
Colour perception, like all perceptions, is subjective.
Colour accuracy is not.
Your computer room example may make your colour perception happy, but it
won't make the colour coming off your system accurate.
William Robb
