I’m not sure you see my point on how the same “gamma 2.2” would look on different displays. It’s the same concept behind BT1886 to avoid crushing the “near black” levels because the panel simply cannot go deep black enough.
With an OLED obviously that isn’t an issue but that means that my 1% black is going to be DARKER than the 1% on an LCD TV simply because the LCD panel cannot go as low. That said, I don’t think there is a universal “correct” way as it depends on how the content was graded.
Cinema for example is different, it’s graded on a DCI projector which has a limited contrast of 2000:1 and a mediocre black level. All of them.
I definitely cannot touch the offsets on my C7 – again, see the longer thread you linked above. I can only try the brightness control but I think I did that before and the whole panel (barely) glows before the black levels are correct.
Just to clarify, when I got that C7, I did what you say – do a TV basic adjustment before going with DisplayCAL. Once I noticed some banding and crushing I turned to that thread and quite a few people with much more experience than me on the C7 suggested to reset everything as those controls introduce all sorts of issues. The only controls I was “allowed” to touch are the “gain” ones in the service menu to at least get the white point correct.
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