I was under the impression that the content of the following page was explicit enough for anyone to use with v4 profiiles. That's what I've been using with success anyway. http://www.color.org/srgbprofiles.xalter Now, that is VERY different and TOTALLY unrelated with your "image-based" gamut mapping. Thank's for replying / Roger -----Original Message----- From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx] On Behalf Of Graeme Gill Sent: November-02-11 6:09 PM To: argyllcms@xxxxxxxxxxxxx Subject: [argyllcms] Re: Perceptual Reference Media gamut and ColProf Roger Breton wrote: > Isn't the PRMG "workflow" well laid out, in that the source profile > cannot be anything other than "sRGB v4 Preference..." that's on the > www.color.org Hi Roger, I'm not sure what you mean. Nothing about V4+PRMG restricts the choice of source profile in a device link or CMM. > site? And only the Perceptual intent can be used for the conversion? The intent is always saturation in my terms, since the nature of using an intermediate gamut is that there is no way of knowing whether the source gamut is smaller than the destination, and the V4 AtoB & BtoA gamut mapping symmetry requirements force this. > Graeme, does Argyll already support the creation of v4 output profiles? No it doesn't. > P.S. When do you ever find the time to sleep zzzzzz? At night :-) Graeme Gill.