I have a 65C7 with a PS4, cable box, and Roku running through a Yamaha RX-V675. I know brightness is generally best set at 50 or 51, but if I leave it there, I end up with a lot of black crush. I've used the following youtube video to try and set the black levels.
I set the brightness so that the outside black is still pitch black, but I can see the two block and just a hint from the 1 block in a pitch black room. Using this technique for the Roku I ended up with brightness at 66 which provides great black levels and dark details (Watched the pilot of Sense 8 last night, it looked excellent). I know I should be using the Netflix app through the TV, but I didn't have time to get the audio working right, so just went with the Roku.
So is that a decent way to set the brightness level for the Roku?
I tried to set brightness with the same video on the PS4 with the youtube app, but then blacks were washed out like crazy on the Blu-Rays. I suspect I need to set the PS4 to RBG limited then set it. Is this because the TV or PS4 isn't setting the color range correctly?
I'm using ISF bright for the Roku, ISF dark for the PS4, and then cinema for TV, since that gets washed out with the brightness above 57 or so. Thankfully there are enough picture modes that I can have different settings per device.
Could this be my receiver causing this? I went through every video setting on the receiver and set it to through or direct. I still can pull up the on screen option menus, so I'm not sure if I totally disabled correctly or not.
Sorry if these are basic questions I should have figured out myself, I haven't had a ton of time to mess around with the settings. My wife doesn't get all the tinkering and just wants to watch shows. Plus we just moved, so play time is limited.
Awesome TV by the way. I haven't had the stones to pull up the 5% image yet. So far I only see a hint of red on the left side and one bar in the middle right screen. Both are rarely noticeable during actual content. During Sense 8 I think I noticed it once and that was while I was actively looking for it. It's probably not the best one out there, but I'm sticking with it.
sorry for the long post.
Edit: when setting brightness, I've been using something around OLED light 35 and contracts 80-85.