Datacolor User to User Support Group.

--- In colorvision_group@yahoogroups.com, CDTobie@... wrote:
> To the target values you specified when you began. If your target 
black 
> luminance is set to .4, then the software will assist you in 
adjusting to that. Of 
> course, if your monitor's native blackpoitn is .6, and you chose .4 
because it 
> sounded better to you, there is no way you will be able to lower 
the 
> blackpoint, so you will fail to reach that target, just as asking 
for a black darker 
> than what your printer, inks, and paper can manage is not possible.
> 
> For white, I would recommend you use the ambient light function of 
Spyder2PRO 
> v2.2, and choose an appropriate white luminance value for your 
situation, 
> instead of simply running your monitor at max luminance, which may 
be way off for 
> your lighting (causing poor matching), not to mention burning your 
monitor 
> out faster than necessary. White is very relative (as the eye is 
very 
> adjustable), and unless monitors are side by side, setting them to 
the same white 
> luminance is not necessary (or desirable), while setting them to 
appropriate white 
> luminance for your environment is very necessary.

All this makes perfect sens, thank you
I wonder, though, if using your eye, under ambiant light, to 
determine the "right" black and white point luminances isn't even 
better than using software since these are such subjective notions. 
But then again: the two "knobs" available on most LCD screens 
(brightness and contrast) are not readily helpful for that... Not 
clear neither on which kind of chart this should be done.