Quote:
Originally Posted by hulkrogan
Unless it's problems with the source, I can definitely notice the pixilation on an 80" TV from more than 10' away. It was the first time I went "Huh... so that's why we need 4K".
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What you are probably talking about are macro blocking and pixilation compression artifacts. You'll see pixelation in overly compressed sources in things like explosions where you'll see it turn from something smooth to brightly colored squares. Macroblocking is similar where you can see rather large blocks.
At 1080p, even on an 80 inch tv, the pixels are less than a mm. So if the pixels you are seeing are less than a mmm, then 4k will make a difference. Bigger than that, it is probably compression artifacts, which are becoming less common with higher bitrate sources and better compression algorithms.
When you see the screen door effect where it looks like you are watching through a screen door, then you are actually seeing the pixels and would benefit from a higher resolution. I see this effect sometimes sitting close to a large projector image or sitting up close in a digital movie theater.