Roger, Generally, for cases utilizing Dumb/static CMM ICC processing: Gamut mapping occurs when the application of the Source profile results in a Profile Connection Space (PCS) color that is outside the gamut of the destination profile, and gamut mapping is provided by the destination profile. Gamut mapping is not needed when the resulting PCS color is inside the gamut of the destination profile. Thus, gamut mapping is not performed for PCS colors within the intersection of the source and destination gamuts. Additionally, destination gamut colors outside of the source gamut are not accessed. For cases utilizing a Smart/Dynamic CMM: It is possible for the CMM to perform rendering/re-rendering along with gamut mapping by taking into account both the source and destination gamuts to achieve various reproduction aims. In this case mapping between non-intercecting regions of the gamuts is possible. However, the extent to which this happens is a proprietary aspect of the smart/dynamic CMM implemeneter. Max Derhak (PhD) Principal Scientist -----Original Message----- From: colorsync-users-bounces+max.derhak=onyxgfx.com@lists.apple.com [mailto:colorsync-users-bounces+max.derhak=onyxgfx.com@lists.apple.com] On Behalf Of Roger Breton Sent: Friday, April 01, 2016 10:41 AM To: ''colorsync-users?lists. apple. com' List' Subject: Gamut mapping newbie question I am told that, gamut mapping only occurs when the Source and Destination gamuts are of different sizes and shape? Best / Roger _______________________________________________ Do not post admin requests to the list. They will be ignored. Colorsync-users mailing list (Colorsync-users@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/colorsync-users/max.derhak%40onyxgfx... This email sent to max.derhak@onyxgfx.com