Datacolor User to User Support Group.

--- In colorvision_group@yahoogroups.com, "Brian Smith" <zen1@...> 
wrote:
 
> > Yes but again, it is not the contrast that has to be adjusted for 
> > comfort, it is the pedestal and the white point luminance
> >
> 
> First you say '"Contrast" is brightning or darkening your white 
point' 
> and then you say, 'Yes but again, it is not the contrast that has 
to 
> be adjusted for comfort, it is the pedestal and the white point 
> luminance'.
> 
> Don't you think you are contradicting yourself there?

No. The confusion comes from the wrong use of terminology when it 
comes to display tweaking knobs, as I tried to point out. When I 
refer to "contrast", I mean the knob called contrast on the display. 
when i refer to contrast without the ", I refer to the contrast of a 
picture, which is the real thing. I still maintain that when a 
display refers to "contrast" as a mean of adjusting your viewing 
device, it really means white point luminance level (rather 
brightness but certainly not contrast). at least that's what it was 
for a CRT. As pointed out earlier, i am not quite sure on LCD's. 
Of course, when you tweak your white point luminance with respect to 
your black level, it will have a marginal effect on the overall 
contrast of the picture since you will expand or reduce the span of 
your grey scale. But this is not like applying a gamma or an s 
curve....