Darzur wrote: > Are old CCMX files still valid and can be used? Or have I to translate them > to a new (CCSS) file format? They serve a different purpose. The CCMX files are for colorimeters that are calibrated using just matrices. The CCSS file is for colorimeters that are calibrated using spectral sensor sensitivities (ie. Just the i1d3 at this point.) Graeme Gill.