Sam Berry wrote:
I would also add that the calculation of daylight and blackbody points can usually be considered outside the closed system, and so trusting any calibration utility to set D65 using the 10 degree observer is likely to give meaningless results (ColorNavigator excepted perhaps). The observers only match numerically at x=y=1/3. D65 is only x,y=0.3127,0.3290 using the 2 degree observer. Using any other observer the numbers are just a random shade of white-ish. A new set of BB and daylight curves would need to be calculated.
Good point. I will fix dispcal and spotread so that the color temperature correctly takes into account a non-standard observer (I overlooked this in adding an alternate observer). Graeme Gill.