> The luminance is how bright this is but it's separate
> from the color of white. So a display at 120 cd/m2 versus one at 110 cd/m2
> is the intensity separate from the color. Does this mean that as one changes
> the intensity, the white point might change?
The white point will change only a little bit when you're dimming the
backlight of a TFT, but it will change.
> I guess it could be that's not
> something we need to be concerned with since the profiling software should
> be looking for and recording these values.
Of course.
> Of course you can ask the software to
> attempt to calibrate to a CCT like 6500K or better an actual color such as
> D65 and an adjustment has to take place, usually at the graphic card which
> many want to avoid.
What do you mean here? How would you calibrate a display to D65? D65
is a specific spectrum and in current displays you'll have no choice
to alter the spectra of the output. A more exact "white point
calibration" could be to specify xy-values in contrast to a correlated
color temperature (CCT):
1. different xy-values will have the same CCT
2. specifying xy-values will eliminate the differences you'll get in
different vendors software how the CCT is calculated. Alone the
calculation may vary several 100K!
Best regards
Peter
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