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strredwolfhttp://www.audioholics.com/education/display-formats-technology/1080p-and-the-acuity-of-human-vision
It's a "study" of how actually good 1080i/p would be for HD content. In it, it claims that on average people only can distinquish two dots within 1/30th of a degree in their field of vision. Any closer and they'll merge in your eye.
Let's do the math here. If you're 10' away from your TV screen, to see all the lines w/o mental blurring, the distance from line to line would be, um....
10 feet * 12 inches/foot * tan(1/30 degrees) ~~ 0.0698ths of an inch (aprox). In printing terms, that's 14 dpi and change. Your screen would need to be roughly 6.25 feet tall -- and in the realm of most projectors (I doubt they make LCD's, plasmas, nor SED's that large for consumers). Any shorter and it's a bit of a waste. Further away and you need to make the screen bigger, until you basically need to go to a movie theater.
I think I'll stay at 720...
It's a "study" of how actually good 1080i/p would be for HD content. In it, it claims that on average people only can distinquish two dots within 1/30th of a degree in their field of vision. Any closer and they'll merge in your eye.
Let's do the math here. If you're 10' away from your TV screen, to see all the lines w/o mental blurring, the distance from line to line would be, um....
10 feet * 12 inches/foot * tan(1/30 degrees) ~~ 0.0698ths of an inch (aprox). In printing terms, that's 14 dpi and change. Your screen would need to be roughly 6.25 feet tall -- and in the realm of most projectors (I doubt they make LCD's, plasmas, nor SED's that large for consumers). Any shorter and it's a bit of a waste. Further away and you need to make the screen bigger, until you basically need to go to a movie theater.
I think I'll stay at 720...
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Date: 2007-04-11 07:14 pm (UTC)You can already get decently sized HDTVs for under $500. I paid exactly $500 for my very high quality (1:1600, etc) 27 inch 720p screen. I suspect that 20-27 inch LCD screens will be reasonably priced at the same amount that 20-27 inch NTSC tvs were just 5-6 years ago. $200-400. You'll probably see some $100 or so 20 inch SDTVs that show to ATSC directly.
Plus, as your woot.com link pointed out, 1080p TVs can be pretty cheap already, Both Westinghouse and Spectre have screens for $1000-1300 that are 37-42 inches 1080p. This is too small to tell the difference at 8-10 feet, but at under 4 feet it should be good enough and would make an excellent computer monitor. At further distances, it'd be just the same as a 720p monitor, and maybe $200-300 more in cost.