Definitely open for discussion! And, I must say you have driven my percent certainty down SIGNIFICANTLY. I downloaded the content you mention and see exactly what you mean. Now I'm confuzzled. I've only tested these settings on Blu Ray material, and was actually never able to see any color banding, (which is kind of irrelevant since EVERYTHING I've read says use YPb as the output for Blu Rays, and then this is a non issue as you can't even change these settings.) One of the posts
mentioned color banding in a Ratatouille extra, (although his before picture is not showing up in that post). I could not see it band either way, nor the Pixar logo, so maybe there have been some PS3 firmware fixes since these recommendations came out. I could actually discern little Blu Ray difference between YPb output with SuperWhite on, RGB Full/HDMI Normal, RGB Limited/HDMI Low.
Nearly every "expert" opinion I've read here on AVS advises RGB limited. But, I definitely see banding with RGB limited and HDMI black level low in the 2 sources you suggest, and do NOT with RGB full range and HDMI Black level normal.
I think the issue is that the RGB limited recommended setting is correct for video
encoded material. I think for other PC encoded materials, such as games, (and apparently those trailers, which is kind of weird), then RGB full is probably correct. Since we can force the display output to YPb for Blu Rays, then it seems to me that RGB and Black level should be set what makes games work best, (assuming you have no other RGB video based source sharing the input)
. I wonder if the issue, is that it is just hasn't really been standardized as to if games or trailers are encoded in PC 0-255 RGB levels, or video 16-235 levels. So, these settings may need to changed from time to time. Although, realistically it is pretty close, and most people would probably be OK with just leaving it one way or the other. Argh... now I don't know what to recommend in the FAQ, and how to not make it too confusing.
Perhaps I should just say something like RGB Full/HDMI Black level Normal is ideal for PC encoded content like games, whereas RGB Limited/HDMI Black Level Low is better for video encoded content. However, since Blu Rays should be forced to output in YPb format (and thus bypassing the whole RGB/HDMI Black Level issue), you may want to set up the combo for games. If you notice a bad picture, color banding, or bad black levels, to try the other combination. How does this sound?
Originally Posted by Nullman
I hope that because you are 99.5% sure doesn't mean that it's not open to discussion. I'm just trying to get the best picture I can as a DIYer.
It's funny that you should mention color banding, because that is really the only difference I can discern. I see color banding with the settings you posted that I've not seen before. One piece of source that I saw this in is the Wipeout HD trailer from the Playstation Store. There are gray boxes that rotate by with bullet points about the game in between game footage. With your settings I can clearly see color banding in the gray boxes, under the text. I see maybe a dozen distinct colors of grays and I can clearly see each step to the next color. If I leave all of your settings the same and only change HDMI Black Level to Normal on the TV and set the PS3 to Full Range RGB, the gray colors blend more smoothly from one to the next. I thought maybe it was just that trailer, so I brought up the WALL-E trailer 2. I see some color banding there too. Not as bad as with the Wipeout HD trailer though. I see it in the top 1/3rd or so of the animated Pixar logo (with the hopping light) in the powder blue background. If you have access to these two sources I'd be curious to know if you or any one else see similar results.