Originally Posted by Xuivo
Can someone explain to me the floating black and false contouring please? Also, is there some others issues that I've forgot?
is when the set dynamically adjusts how black the blacks are depending on the brightness of the rest of the picture -- I think the idea (from the TV-maker's perspective) is to create some sort of dynamic contrast management depending on the overall light level of the scene. Read some reviews of Panasonic plasmas over on CNet, they discuss it there.
This is how they describe it on the review of the 58px600u: "Like some previous Panasonic panels we've tested, the TH-58PX600U floated black. In very dark test patterns, we noticed that after a few seconds the black areas of the picture would actually get darker, obscuring shadow detail. It occurred only during patterns with a very low APL (average picture level), meaning they were almost completely black with no bright areas, and as soon as the image became brighter the shade of black corrected to its original level."
It's hard to notice unless you're looking for it -- I've never been bothered by it on my Panasonic, but others are. On some sets this "dynamic contrast" can be turned off. I bet lots of LCD's do the same thing to try and improve perceived contrast."False Contouring"
is when an area that is supposed to look like a smooth color gradient -- say a sky at sunset that grades from pink to orange to blue -- instead shows up as distinct bands of color. The "false contours" are the edges of the bands of color that shouldn't be there, since it's supposed to be a smooth blend.
This is an area that I presume LCD would be worse than plasma, since plasmas can display a wider range of colors, but this is just a guess and YMMV. Hope this helps.