[argyllcms] Re: Wrong gamma / color rendition worse than before calibration

  • From: Gerhard Fuernkranz <nospam456@xxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Fri, 09 Sep 2011 00:28:03 +0200

Am 08.09.2011 00:58, schrieb Graeme Gill:
It seems that by changing the white point from something near the native white 
to 6.5K you have reduced the brightness using the LUTs. That will loose you 
contrast ratio and steps. You could avoid this by using the native white point, 
or at least a white point closer to the native white point.

Hi Graeme,

a too green-ish or magenta-ish native white point can be unpleasant though. 
Maybe you can add an option to choose a white point on the blackbody or 
daylight locus which has minimal difference from [255,255,255] in _device RGB 
space_ (in order to keep as many levels as possible)?

(Using a WP on the blackbody or daylight locus with the same CCT as the 
display's native WP does unfortunately not minimized the distance to 
[255,255,255] in RGB space.)

Best Regards,

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