Highlights has a cyan tint

[Peter]

Canon changes white point depending on ISO and aperture.

For 5D II darktable has white=“12995” for ISO 160 320 640 1250
and
white=“15950” for everything else.

For black point darktable has a list but also analyzes the optical black field. The optical black field was wrong in darktable for my M5 and D60.

Measure black and white levels?

I took some raw files of my Spydercheckr and with my Canon 300D, D30, D60, 30D, 1Ds, 7D, 6D, M5 and compared them after I did a color calibration with darktable. The older camera models like D30, D60, 1Ds had some more greenish shadows than the others. I know the three are missing optical black areas and I wonder if that could be the reason in this case. If I take some pictures with a D30 with lens cap on and with the same shutter speed I use for the real photo, whould I be able to measure the …

Why three white levels and which one should be used in darktable? Normal White level?