Color setting preference-perceptual or relative colorimetric

Robert Goldstein

• 23. Januar 2010 21:23

C1-5's default preference is perceptual. I would like to know what is the preference of most users. It would make sense that one should use the same setting in Photoshop for those images that get exported to it. In case it matters, my output color space is ProPhoto RGB.

Rob

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  thowi

  • 24. Januar 2010 00:42

  I guess most people leave it to perceptual.
  There's a common misunderstanding about the perceptual RI - it does not work with all profiles.
  TRC matrix based profiles (such as SRGB, AdobeRGB, ProPhoto ...) contain no information how to translate a perceptual RI.
  So if the target profile is a TRC matrix based profile it's always relative colormetric anyway.
  See here for instance: http://www.colorwiki.com/wiki/Color_Man ... Eworkspace.
  Actually the CMMs (color management modules) could be capable of such conversions... but the current CMMs are not.
  However the default has a relevance if you set table based profiles (mostly printers) as proof profile or output profile.
  My prefs are set to relative colormetric...

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