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Originally Posted by Gizmo  Given the above figures, at about 3.7 feet, you can fully distinguish the pixels in a 1080 image on a 32" screen. |
Assuming the viewer has good vision, they would still appreciate that they're looking at a 1080 image at a slightly longer distance - even if they can't quite make out each pixel individually.
I would say that a 1080p HD screen starts to become pointless at over ~5 feet. Of course, it will look more detailed at 3.7 feet.