Something I am not solving, not event with Ted's help.
It's all about 1Dlut. 3Dlut, I would say also thanks to drifting, looks from pretty good to excellent.
I am on sw 55 on my E8, but I I have gotten similar problem with sw 20.
Regarding 1Dlut generation and checking:
I keep contrast at 85, brightness al 85, no ABSL, no Logo, and set my Murideo on YUV422 16-225. Interval on LS 0-255.
My I1pro has Intelligent Integration at 1.0, stabilisation and integration at 0.75 (but I have also tried without finding significant differences) and intergration time at 0.75.
Here what I get at first reading:
Then I convert to rec701, sub-black, upload, and here the result:
What concerns me is what happens at 90-95 IRE on gamma. And I get the same calibrating at 220 Nits,
Doing manual calibration I can flatten pretty well the gamma in that area (L=3 at 85, L=1 at 90 and 95), and with RGB gamma quite alligned thank to RGB balancing fine tuning:
It is only my issue? Is your starting different? Maybe something taht does not work well only on my E8. The real issue is about how can do fine tuning on the top of the good work done on 1Dlut. Obvious that on my E8, to my knowledge, the best would be 1Dlut manula calibration and 3Dlut by LS (by the way: .55 sw come with a red inaccuracy I can 100% fix with a good LS 3Dlut)