Presumably if they have a wide enough angle and a high enough resolution they can cover a much larger space. It's symmetric situation, you need just as much re

Presumably if they have a wide enough angle and a high enough resolution they can cover a much larger space. It's symmetric situation, you need just as much resolution at the distance as the minimum amount you want something in the VR world the same distance from you to respond to. A well designed system can even resolve sub-pixel motion of those LEDs in the field of view of the camera.