[argyllcms] Re: wtpt/chad in input V2 sRGB profiles from color.org

  • From: Alexey Blinov <abvgdee@xxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Sun, 05 Aug 2012 21:00:11 +0400

Graeme, I'd like to summarize "for dummie" out here.

Since sRGB assumes the display at D65, and V2 profiles from color.org use D50, 
they are not supposed to be used as input sRGB profiles. That is, the kind of 
profiles that specify meaning ("units") of an RGB number triple in an image 

Instead, they are provided partly for a specific soft-proofing scenario with a 
dumb CMM.

For input sRGB profile, one must use a profile from some reliable source (like 
argyll/ref/sRGB.icm). But incorporating input sRGB profile in an image file is 
pointless because all the consumer software already assumes such correct sRGB 


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