Marco wrote: > I have not understood, it is possible load the correction directly into the > instrument so that > it can be used with every software? Which instrument do you mean ? Most colorimeters use a 3x3 calibration matrix which is stored in the instrument EEPRom. The i1d3 uses a different approach, and instead uses spectral measurements from display to optimize it's accuracy for that type of display. Typically these measurements are stored in a file (.edr files for X-Rite, .ccss for ArgyllCMS). Graeme Gill.