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Originally Posted by MickMcGeough
Can you tell me why 4K is a crock? I need to upgrade my main set soon and I've been waffling on 4K or not...
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Basically at a reasonable distance with a reasonable screen size your eye is the lower resolution device, so it doesn't matter how high the resolution on the set is, you won't be able to see the difference. It's like buying high-tech speakers that emit sound at a frequency that the ordinary person's ears can't hear.
Unless you sit 5 feet from your 80 inch main set there's really not much point, but it's very easy and cheap for TV manufacturers to push this technology and it's highly marketable so they'll absolutely do it. Meanwhile all of the current problems with LCD still exist. These two articles sum it up.
http://www.cnet.com/news/why-4k-tvs-are-stupid/
http://www.cnet.com/news/why-ultra-h...-still-stupid/
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This math, or just looking at your TV, tells you that you can't see individual pixels. What's interesting is that a 720p, 50-inch TV has pixels roughly 0.034 inch wide. As in, at a distance of 10 feet, even 720p TVs have pixels too small for your eye to see.
That's right, at 10 feet, your eye can't resolve the difference between otherwise identical 1080p and 720p televisions. Extrapolating this out, you'd have to get a TV at least 77 inches diagonal before you'd start having a pixel visibility problem with 1080p.
So if your eye can't tell the difference between 720p and 1080p on nearly all modern televisions, what's the need for 4K?
Excellent question. There isn't one. Not as far as TVs go, anyway. You'd need a 2,160p TV over 154 inches diagonal before you'd be able to see the pixels. On a 4K 50-inch TV, the pixels would be roughly 0.011 inch wide.
Where's the crossover where 1080p and 4K become noticeable? It's not exact because of all the above mentioned variables, but suffice it to say at 10 feet, it's somewhere well above 77 inches.
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