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Azuren said:
Zkuq said:

At what distance? For my 43" 1080p TV, that seems about right. Of course the distances might not be entirely correct, but the point still stands. I'm sure you can notice some improvement even at longer distance, but at some point it'll be diminishing returns.

Also, the chances are that what you're showing them is better in ways other than just resolution, and they're noticing the other improvements too.

Most people notice a difference at roughly 6ft away. We have it sitting next to a 40" w650D from Sony, and both are playing Apollo (one on Bluray, one on 4K Bluray). The typical response is "Wow".

Well, 6' isn't too far from being suitable for 4k according to that chart, so although it's not entirely correct, it's not that far off either. I'd say the chart is at least helpful, even if you can't rely on it completely. Actually it'd be interesting to see a chart about the optimal physical pixel size as a function of eye sight. Would make it really easy to calculate the optimal viewing distance for each eye sight and screen size. In addition to the optimal viewing distance, it would also be interesting to know the limits at which you can still notice the benefits.