Assertion: lens's angle | /r/CapableOf | increase with lens f-number
Facets:
value: for angle
type: PURPOSE
Source sentences:
text: For a given position of the PoF, the angle between the planes that define the near and far limits of DoF (i.e., the angular DoF) increases with lens f-number; for a given f-number and angle of the PoF, the angular DoF decreases with increasing tilt.