As you can see, I'm up to the wazoo with i1Profiler display calibration facilities these days. I should have opened my loud mouth before and tell X-Rite to have a heart and add some kind of radio button option in the interface, when displaying calibrated video curves to the user, after profile creation, to allow a choice of white or gray background on which to observe the curves as opposed to that horrible solid black? Try to inspect a few pixel wide lines of green, blue and red against a black background. Sorry, I can't colors discriminate that well. / Roger