Assertion: camera lens's length | /r/HasProperty | 10 mm
Facets:
Source sentences:
text: If a lens’s focal length is 10 mm and its entrance pupil diameter is 5 mm, the f-number is 2.
text: This means that for the most flexibility, you want a zoom lens that covers some really wide-angle focal lengths—about 10mm on a crop sensor camera and 17mm on a full-frame camera.