Ivan Tsyba wrote: > R080505.txt and resulting IMG_0523.ti3 do not have spectral data that > needed for -i switch. Yes, that's the problem. > I'm not sure if colprof and scanin can use spectral data for input devices > profiling. It should work - profin.c has the code to convert spectral to reference XYZ values. > If not, at least in theory, you can use your .sp file to > calculate tristimulus values of your chart under that illuminant using > chart spectral reflectance data, and then use that values as usual in > scanin, but I can't figure how to do this with available argyllCMS tools > (calculate XYZ from chart reflectance and illuminant spectrum data). You would use spec2cie, but it shouldn't be necessary. Graeme Gill.