What should come after HDTV? There’s certainly a lot of buzz about 3D TV. Such directors as James Cameron and Douglas Trumbull are pushing for higher frame rates. Several manufacturers have introduced TVs with a 21:9 (“CinemaScope”) aspect ratio instead of HDTV’s 16:9. Some think we should increase dynamic range (the range from dark to light). Some think it should be a greater range of colors. Japan’s Super Hi-Vision offers 22.2-channel surround sound. And then there’s 4K.
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