Assertion: lens's angle | /r/CapableOf | approximate the angle of human vision
Facets:
value: often
type: TEMPORAL
Source sentences:
text: The resulting diagonal angle of view of about 53 degrees is often said to approximate the angle of human vision; since the angle of view of a human eye is at least 140 degrees, more careful authors will qualify that, for example as "similar to the angle of crisp human vision.