Originally Posted by Cattledog
If anyone has "Black blobs" or "Crushed blacks" there are only 2 reasons....you have a defective set or your settings are way off.
There could be other reasons...
If your feeding the TV an sRGB signal via HDMI and you need a curved gamma response. I was in this boat. I calibrated my set to a flat 2.2, 2.3 and 2.4. It never looked right.
There is a proper gamma curve for sRGB and it's not flat like the TVs almost are out of the box. However I really recommend a BT.1886 gamma curve on this set. It made things look much better, excellent shadow detail and the blacks appear to be better in all but the darkest scenes.
Make sure you have the HDMI black level set properly as others have mentioned it'll be either "low" or "normal". Also make sure the black enhancement is off in the picture menu as well the dynamic contrast.
Usually HDMI level to "normal" and brightness to about 45 or 46 is correct. But this isn't true with all sources and video modes.
One way that *might* tell you which is the correct HDMI setting... (turn off dynamic contrast and the black enhancement in the picture menu)In a pitch black room...
Watch Cinemax or something. Wait for the tiny MAX logo or something where the screen is nearly all black but the tiny logo in the center and pause the TV. Make sure there is no compression noise in the blacks (blocky compression artifacts). If there are try another channel.
Leave it paused.
Get up VERY close to the screen and focus on the black areas of the screen. (also verify again there are no block artifacts in the solid black)
Do you see dancing pixels of red, green or blue in the black areas? If so adjust brightness down one click at a time until you no longer see them. If you do not see dancing pixels in the black areas adjust brightness up one click at a time until you do. When you hit that spot where one click up makes the pixels appear and then turning it back down one click makes them stop. Write down the brightness number and note which mode the HDMI is in (low or normal).
Repeat this procedure again with the HDMI on the other mode (switch from normal->low or low->normal). write down what the brightness needs to be at to hit that spot where there are no dancing pixels in black.
One of these modes should target closer to a brightness setting of around 50 (+/- 5). Which ever one does should be the right setting. This is not a fool proof way to do this... but it should work. As well depending on the source and calibration sometimes brightness settings can be anywhere. But with the TV not calibrated and all setting to factory this should get you close.Edited by SiGGy - 8/17/12 at 9:22am