Hello, I got this message creating icm form my laptop LCD,I used this targetgen to create a large patchset (2000) and now using colprof with this arguments
colprof.exe: Warning - Values clipped in setting A2B LUT! *** Try switching to XYZ PCS ***
It's a hint that perhaps your monitor is out of gamut of the Lab PCS encoding range. I'm not convinced that the warning is 100% reliable though, so I've put a more specific test in the next release, and increased the level of information. You can check by looking up the primary chromaticities of the matrix version of the profile (colprof -as) and see if they are clipped. [ ie. iccdump -v3 -trXYZ -tgXYZ -tbXYZ profile.icm and check if the a or b values are outside the range -128 to +128 ] Or you could use icclu on the Lab PCS cLUT profile to see if the primaries are clipped: icclu -ff -ir profile.icm 1 0 0 0 1 0 0 0 1 etc. Graeme Gill.