I have observed a strange behavior and I am trying to understand it before I go ahead and profile my JVC RS500 projector and create 3dLUTs for MadVR. Maybe, someone can help me understand what is going on?
The problem happens as I try to adjust the 100% white, 6500K whitepoint.
The probe is an i1. It is fixed on a tripod and it never moves between readings.
First, I adjust my PJ to D65 with the i1 connected to my laptop, running Chromapure3, displaying a 100% BT709 white field from AVSHD and played through Madvr. In madvr, I have chosen "disable calibration controls for this device". Madvr reports matrix BT709 and primaries BT709. I manage to get CP3 to report a corrected color temp of 6456K, deltaE 0.5, so, I am happy! (image1)
But, after that, I open DisplayCal and start profiling my display. Same i1 probe, no correction file. When the display adjustment window shows up before profiling starts, madTPG displays its full 100% white pattern, and the resulting reading is a lot different: color temp is reported to be 6752K? and the RGB bars, of course, show there is way too much blue. (image 2)
Why such a difference? I am trying hard to find out what I am doing wrong.
Since I will be watching my movies through madVR, I believe the white 100% displayed by madVR and read through Chromapure 3 is the white I will see when watching a movie. But why Displaycal reports a white so much different? I am just trying to understand and start my profiling with a correctly adjusted D65...!