Ivan Tsyba wrote: > How to use Perceptual Reference Medium Gamut as source gamut for > perceptual intent table calculation in colprof for printer profile? > > colprof -g RefMediumGamut.gam not working - source profile is still needed. Hi, currently the .gam file doesn't have all the needed information for defining the gamut mapping - specficically it's missing a white point and black point. It's something that probably could be overcome so that a pure gamut can be used as a source of gamut mapping. > As I'm thought about it, this give me more versatile profile that can > be used with different source profiles. Or I misunderstood something > important? Argyll doesn't currently work along the lines of the assumptions used in V4 PRMG workflows, since it doesn't create a symetrical mapping between A2B and B2A perceptual and saturation tables. Such an option would be good in making profiles that will inter-operate with other profiles setup to use the PRMG. But note that the result is a lot less accurate and flexible than creating a specific source to destination mapping. See <file:///D:/usr/graeme/www.argyllcms.com/doc/iccgamutmapping.html> for a more detailed discussion. Graeme Gill.