Originally Posted by assm0de
Regarding the debate about setting black level, I think what the other posters are saying is that just because you've set Brightness at its highest value such that there is no pixel activation going on at 0% stimulus, doesn't necessarily mean that you aren't clipping shadow detail. Because, in some cases, the very darkest shades (17-18-19 on the AVSHD709 brightness pattern) can still be difficult or impossible to see. That is to say, sometimes you have to actually sacrifice a bit of black level (i.e set it a bit higher than optimal) to get those bottom few shades clearly visible. But it depends entirely on the TV in question. The last Panasonic I calibrated could in fact be set accurately using just a 0% field and lowering Brightness until all pixel activation is gone, but it's not necessarily the case on all displays. On the Samsungs it's definitely not the case.
Interesting points about the Samsung. Now I can only speak for my GT50 of course, But the custom mode lined up perfectly for me. By that conclusion it was reasonable to assume that the intended target of the AVS 709 disc was in fact to allow your screen to display full black with no distortion, nothing more and nothing less.
Edit: I tested all the modes out of curiosity, at least the ones that are fairly accurate. THX Cinema, Cinema, and THX:BR. They actually were all too bright, which I found very interesting. So much for crushing blacks, it was washing them out. I wonder why it would need to be darker than what's required to display a black screen however. That I don't quite get. Very interesting indeed.Edited by JSpectre88 - 3/24/13 at 11:37pm