Assertion: lens's length | /r/HasProperty | 50mm
Facets:
Source sentences:
text: Lengths common to macro lenses are 50mm, 60mm, 100mm, and occasionally 200mm.
text: The best focal length for portraits is 50mm and above when trying to avoid distortion.
text: So the “equivalent 35mm focal length” for this smartphone camera at 4mm is 50mm.
text: focal length is 50mm.