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BasICColor and "vcgt" tag

I don't know if what I am saying makes any sense,


but from what I understood so far about calibrating/profiling LCD monitors such as Eizo CG 21,
the best thing a calibrating/profiling soft can do is to make all the necessary adjustment in the monitor video card through DDC/CI since it's got more bit depth than the apple video card does

Correct?


My question is:

I created two profiles for my Eizo through an Eye-One spectrophotometer


First Profile with Color Navigator 3.0.1 - D50 Gamma 2.2 - 90 Cd/m2

Second Profile with BasICColor 3.0.4 - D50 Gamma 2.2 - 90 Cd/m2


The profile created with ColorNavigator has a "vcgt" tag (apple display card table) with the RGB channels set at gamma 1.0, minimum 0 maximum 1 - a straight line - therefore I assume the values of the LUT in the computer video card have not been touched

The profile created with BasICColor 3.0 has a "vcgt" tag which is not straight for the 3 RGB channels,
each channel has it's individual curve/correction,
for example, blu has a minimum value of 0,001 and maximum of 0,984

Am I wrong to assume that therefore BasICColor has changed somehow the values in the computer video card's LUT?




Carlo





carlo lavatori studio

via borsi 3
20143 milano it
t. +39 02 8323904
f. +39 02 8356471
m. +39 348 4513218

www.carlolavatori.com
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