My B8 has the exact same behaviour. Raised blacks (noise) at brightness 50, crushed blacks at 49. What I managed to do to alleviate the issue was raising black level to 51 and reducing Lower RGB values (2 point IRE) some (forgot the exact value). Now I have no "noise", but 68 is still invisible - a minor black crush. I saved this to "Cinema" preset, and left "Technicolor" at default 50 with the raised blacks, just in case if I notice any severe black crush.Hello!
I've got a replacement panel from LG for my C7 recently (due to burn-in on the old panel), and I'm having some problems with it. I've noticed this when watching movies, where I can see noise present in black parts of the image (e.g. letterbox bars). Also, near black levels seem to be unnaturally bright, causing posterization. I did not notice with the old/original panel
To be specific, when using standard unmodified Technicolor Expert (or Cinema Home) settings I have these problems:
To reproduce the problems, I tried to use the "Mehanik HDR10 test patterns" downloaded from the OP in this thread. Using the test "01. Black level / 01. black-level-v1.mp4" I get these results:
- Levels just above black are too bright.
- There is noise in black parts of the image. The noise is "moving" even if I pause the image, so it's not noise from the image or video itself.
A) Unmodified LG OLED TV Picture Setting "Technicolor Expert":
1. Reference black at level 64 is black, but level 66 is too bright:
View attachment 3035602
2. Noise in reference black:
View attachment 3035603
B) LG OLED TV Picture Setting "Technicolor Expert" settings, but Brightness lowered from default 50 to 48:
3. Black crush; All Black levels up to level 84 shown as the same complete black:
View attachment 3035604
4. No noise in reference black however (which is good):
View attachment 3035605
So based on this, do you think there is a problem with the replacement panel I got from the LG Service? Or what is an expected outcome of the test "01. Black level / 01. black-level-v1.mp4".