Gerhard Fuernkranz wrote:
Even if it not clear how to override the factory calibration, I think it should be pretty easy to modify dtp92_read_sample() to apply an _additional_ 3x3 matrix to the captured XYZ values, before returning them to the caller.
Yes, I did mention that possibility too, but I think Roger would like to be able to use the instrument with other packages too.
Btw, do you know whether this is a three-filter instrument, or does it possibly have even more than three filters/sensors?
I think that the DTP94 has four filters ("XYZx'"), and the i1Display has 3 ("RGB"). The i1display has the scope for 4 (looking at the hardware), but I don't know if there is actually a sensor fitted to it, and I don't see any evidence that the standard software uses such a thing. The X-Rite documentation could be interpreted to mean that there is no sensor matrix in the DTP series, and that the filters are assumed to be XYZ spectral sensitivities (after the X and x' channels are blended). Graeme Gill.