Hi :) Ben Goren wrote: > Or, if the lights aren't controllable programmatically, the simplest thing to > do would be to simply take iterative > readings with spotread. Take a reading, fiddle a knob, take another reading. Or better yet, use the "White point" mode from dispcal's main menu, since you'll then get a constantly-updating readout of CCT. All the best -- Alastair M. Robinson