Setting the luminosity R, G, B values when calibrating a monitor

[david-nicolas]

My CRT monitor, a Dell P992, offers the possibility to vary the

luminosity values of the R, G and B channels. They are actually set

like this: R = 68, G = 80, B = 88 (for luminosity). Is this normal or

possible, or should the luminosity values be all identical? [NB: The

contrast values which I have varied when calibrating my monitor are

like this: R = 98, G = 84, B = 47.]

[._kaa]

That is normal. Calibrating your monitor -- should you decide to do it -- would entail adjusting these values, separately for each channel. They do not have to be the same.

[david-nicolas]

Thanks for your answer. All right, I was confused: it is indeed the luminosity (or luminance) values that should be varied when calibrating the monitor. But what about the contrast values? Should they all be identical ?? (At the moment they are not.)

[ryanjoseph]

On a CRT you always want to up the contrast to the maximum level so that your monitor can display is best range of colors.

[emre]

No, you don't. That means running it at maximum brightness. It is more commonly recommended to maintain a comfortable level of brightness; not too dark, not too bright. Your software should help you to find this balance.