[argyllcms] Re: dispwin vs xcalib loading LUT

On Monday 01 January 2007 13:26, Stefan Döhla wrote:

> > xcalib should change the grafics card gamma table as described in the
> > vcgt tag. I would guess xcalib is not supporting the parametric entry
> > (~2.2) in opposite to the most often used curves.
>
> Hm, that's not right. There's just the system gamma which is used in
> xcalib and not used in dispwin. Whether it's right or not: xcalib went
> the way of the other calibration loaders, dispwin the "clear" way.
>
> >> *But*, when I load an Argyll generated profile (also attached), they
> >> both give the same result!
> >
> > The argyll profile uses a curved vcgt tag.
>
> Right, the gamma profiles use the VideoCardGammaFormula whereas the
> Argyll-profile uses the VideoCardGammaTable. The table leaves no
> space for misinterpretation - wherease the formula does ...

Thanks to all for the explanation; I understand, now.

-- 
   Frédéric

   http://www.gbiloba.org

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