Originally Posted by arvindh
Plasma Model : PS42B450
Hi! I have some doubts regarding my new plasma (month old) and was hoping you guys could clear them for me.
 When I increase the Brightness, my blacks turn almost white at 100%. But it seems to reach a minimum at 50% and doesn't get blacker below that. It's black at 50% but not as deep as I would have imagined. Is this a defect?
 Why is the HDMI Black Level sometimes grayed out? It seems to be there when I watch videos from my USB drive (hooked up to my PS3) and also when I play PS3 games. But for some reason it's blocked when watching Blu-Ray / DVD. It's always at Normal
when grayed out. Does this have anything to do with movies not being in RGB because the PS3 shows them in CMYK?
 When people say "rich blacks" or "deep blacks", doesn't it mean the blacks should match the color of the TV frame...or am I just seeing a lighter black on screen because I constantly compare it that way? I haven't seen a solid deep black on my TV to date, although movies look stunning on it!
 Dynamic Contrast :
Why does turning Dynamic Contrast ON cause an awkward "dip" during "fade to black" moments in movies. Example: Transformers 2 opening scene with the savages; every time the image fades to black, the TV sort of dips
it further, causing a weird flicker. It's like the TV switches on and off again. I like the Dynamic Contrast and Black Tone but have to turn it off because of this. What's the workaround?
 I'm not sure if I'm using HDMI 1.2 or 1.3 cables. Any major differences (especially in black levels)? I'm using the cable that came with Samsung's HD-1080 DVD Upconverting player.
 What's the difference between Black Tone and HDMI Black Level and Brightness?
Really sorry for the many questions! Thanks a mil in advance, all!
1. The proper way to set brightness is with a black clipping pattern or black pluge. The blacks are whatever they are after you do that correctly; on your B450 Plasma, you shouldn't expect too much in terms of deep blacks.
2. HDMI Black Level is only available when two conditions are met:
1. HDMI input in used
2. RGB signal input, not YCC
When both conditions are met, the low option is for 16-235 video levels (limited range RGB) and the normal option is for 0-255 pc levels (full range RGB). If the setting is grayed out, YCC is being output and the setting is irrelevant since YCC is always 16-235 video levels.
3. No, not even on a Pioneer Kuro will the blacks match the bezel. If the blacks are too bright for your, consider a bias light behind the TV. Even then, don't expect pure black from your display.
4. Don't use dynamic contrast or black tone. Dynamic contrast screws up brightness, contrast, and gamma while black tone crushes blacks. There is nothing to be gained from these picture 'enhancements.'
5. No, either your cable works fine or it won't work at all. Black levels are dependent on the display, assuming brightness is set correctly with a black clipping pattern.
6. I have already explained what black tone and HDMI black level are. Brightness set too high will wash out blacks while brightness set too low will crush blacks. Crushed blacks/ black clipping means you lose detail in dark scenes and dark areas look more like black blobs than a detailed image.