Dimitrije Zivkovic wrote: > QUESTION > Can I do at once somehow? > > 1. print single chanel patches and patches for profile (two separated charts) > 2. make profile (standard) > 3. make cal file > 4. apply cal Hi, Maybe you can, if you go to enough trouble, but the result may be disappointing, because you do not get the benefits of a better behaved device during the profiling stage. A sketch of how you would do it would be to print both a calibration and profiling chart, create the calibration curves, and then (somehow) apply the inverse of the calibration curves to the device values in the .ti3 file, before creating the profile. You'd have to throw away any points that clip during the transformation (and this may leave the edges of the gamut poorly defined). Argyll doesn't currently have a tool to apply the inverse of a set of calibration curves to textural data though. cctiff will do this for a raster file, but there is no convenient way to convert from text values to & from a raster file. It's conceivable that this could be done using a spreadsheet. Graeme Gill.