[citation][nom]DVo[/nom]actually alidan is completely right. THX recommends a 40 degree viewing angle. at 9 feet that calculates to 108 inches. even at 120 inches like alidan suggested, all you have to do is move back about a foot or so. so yea, it is amazing how many people do not understand....[/citation]
Both of you have very bad understanding of how this works.
Your example - 40 degrees horizontally. When this TV is occupying 40 degrees of your field of view horizontally, you are standing 7.48 ft away from it. At that point, it has angular resolution (what really matters) of 46 pixels per degree.
At usual distance of 9 ft, it has angular resolution of 55.34 pixels per degree. Which isn't bad, but could be better.
For example, when angular resolution (number of pixels per degree of person's field of view) is ~ 35 or higher, viewer usually can't see pixel grid / pixelation on images. On the other side, angular resolution of ~200 pixels per degree is limit for most of healthy individuals (NHK study), meaning image quality is matching the limit of viewer's eye and is as good as it can be concerning resolution and viewing distance.
Benefit is, of course, non-linear. You'll benefit most with angular resolution up to ~100 pixels per degree. And then up to 200 ppd, quality will rise slowly.
At usual distance of 9 ft, it has angular resolution of 55.34 pixels per degree. Which isn't bad, but could be better.
For example, when angular resolution (number of pixels per degree of person's field of view) is ~ 35 or higher, viewer usually can't see pixel grid / pixelation on images. On the other side, angular resolution of ~200 pixels per degree is limit for most of healthy individuals, meaning image quality is matching the limit of viewer's eye and is as good as it can be concerning resolution and viewing distance.
Benefit is, of course, non-linear. You'll benefit most with angular resolution up to ~100 pixels per degree. And then up to 200 ppd, quality will rise slowly.
Anything more clear to you two?