I read about how adding ambient light, especially one coming behind the screen works on eye retinas and how human eye can only capture 600-800 CR image. I have a window right behind my TV and I open shutters just enough to get some light through. It really does make blacks seem blacker. I can barely tell where the the screen ends and bezel begins.when the background is pure black.
I hear some people say that their "which-ever pro-calibrated LCD TV" performs as well as their plasma TV during the day, but not at night. I take it ambient light is the reason for it. But does it really have an effect on eye retinas that make an LCD TV with 0.05 cd/m^2 black level and 2000:1 CR seem like it has a much higher contrast ratio? like a plasma TV? So, technically, plasmas only shine in a completely light-less room? Maybe that is the reason people prefer LCDs when they go to stores since plasmas are no longer as dim as they used to be, and since there is light all around - LCD image doesn't seem to be much worse, even though in dark rooms it is. I also hear plasmas flicker at 60Hz like LCDs flicker at 48Hz or CRTs flicker at 60Hz - true?
I also hear about ambient lights you can buy, but is there a way to make them with home supplies or lamps? Do they have to have special brightness to them? Positioning? Color?