Hi, just to clarify, are you saying that if I don't have a DLP to ignore the checkerboard?The checkerboard is intended for DLPs. You should see dither in the brighter checker and pure black in the other. With gamma set to BT.1886 / 2.4, you would have to be nose to the screen to really see it. In 8-bit, the checker is 16 and 17. In 10-bit, it is 64 and 68. With a higher gamma, the checker is easier to see, which is incorrect. I think your C8 has 1.9, 2.2 and 2.4 options. Cycle through them and you should see the difference.
I have a Sony A9G and the default black level (50) is correct when I check plugs pattern with R.Mascior and Disney WoW. Looks correct also with the pluge on this disc (both SDR and HDR).
However, when I stand up close to the TV, I can see some slight noise/movement in the boxes that was supposed to be black (albeit much less noticeable as the other squares). When reducing to 49, it looks correct as there's checkerboard with perfect black and the dithered squares. Although now it looks like I'm potentially crushing 1% with other patterns.
Any input would be appreciated. Thank you.