Thank You for your patience, Graeme! Ooh! I have weak knowledge in color management, especially in this project. I had to read ArgyllCMS documentation carefully. Graeme Gill wrote: It is a relative linking if a relative based gamut mapping is selected with (-g/G) -i, and it's not if a non-relative based gamut mapping is selected. ... The gamut should be created in a way that is compatible with the intent being used (kind of messy to use I know, but that's how it is at the moment), so if a relative to white intent is being used, then a relative to white gamut should be created. ... ------------------ It's important to mention in documentation of collink and tiffgamut, that "The gamut should be created in a way that is compatible with the intent being used".