Proper Calibration

[Outland]

I've gotten most of the settings almost perfect for a dark room. Picture is set at 50%, which is reasonable and not excessive from what I understand.

I'm still having trouble with brightness/black level. I've run into the situation that from a true black signal (no picture content), setting brightness to produce perfect black (no light emitted) swallows dark blacks when there is picture content. Likewise, adjusting black to produce no light when there is content on the screen (such as the picture control menu box) ends up making true black (nothing on screen) a dark gray. I've settled on an in-between setting by going one tick below no light output on the picture content setting. True black is still gray, but only noticeable in a dark room and even then it's very slight.

These are very small changes, but it's definitely changing. Why is black level changing?

Also, the top right corner of the picture is slightly dimmer than the other corners. Not sure why that is.