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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 06:56 pm (UTC)At the same time, this may be due to all of the practice I have at changing my focal distance manually. I used to look at magic eye posters and then refocus them while not moving my eyes. I found that I can even do this with the Metal Gear Acid games as well, cross the screens then refocus them. I do go outside to drive a couple times a day, and geocache maybe once a week. I don't know if this helps distance vision or not though.
The only real difference between when I had 2 CRTs at home and 1 at work and now when I have 2 LCDs and 1 crt, with 1 lcd at work, is that my eyes do not hurt when I go to sleep at night. I used the computer the same amount before, but I just suffered through it.