You are right, clipping will happen in transforming the most saturated CMYK values to the monitor, depending on the gamut size of the monitor space. Soft proofing the saturated cyans, for example, requires a very large NEC-like or Eizo or HP Dreamweaver-like kind of monitor to accurately view the data without clipping. Thank's. Sorry Robert. Best / Roger -----Original Message----- From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx] On Behalf Of Graeme Gill Sent: 3 juillet 2014 02:53 To: argyllcms@xxxxxxxxxxxxx Subject: [argyllcms] Re: Custom Illuminant Roger Breton wrote: > Out-of-gamut clipping? Impossible. Suppose I am viewing a CMYK image > in AbsCol. By definition all CMYK colors are in gamut. In gamut for the CMYK device, but not necessarily in gamut for the proofing device or display. Graeme Gill.