Quote:
Originally Posted by Jason Turk /forum/post/18369688
In terms of a "TV" (typical 42"-65" size)...in most rooms humans cannot even resolve a difference between 720p and 1080p, let alone 4k. For front projection it is different because we are talking a much bigger size. But even so, 1080p is usually good for 1.3ish viewing distance without being able to see pixels (16:9 screen width x 1.3)...
Basically unless you like to sit REALLY close, 4k is not critical.
I'm not sure how I feel about that one. Based on visual acuity at 20/20, a seating distance of 3.3x image height (2.40 screen for example), or 1.4x image width the benefits of resolutions greater than 1080p can be resolved (approx. numbers, but pretty close).
Seating closer than these ratios is certainly common, and fall well within SMPTE/THX specs.
How accurate and applicable visual acuity calculations can be I'm not sure, but they seem pretty accurate for that 720p/1080p divide for "TVs" as you describe.
It's definitely not critical, but I don't think we've maxed out our resolution perception at seating distances still well within spec (2x-3x image height).
Of course, there's far more to to picture quality than resolution, and lots to improve on with front projection, that's for sure.