Assertion: camera lens's length | /r/HasProperty | different
Facets:
value: because of the different sensor size
type: CAUSE
Source sentences:
text: but the apparent focal length is different because of the different sensor size.
text: For an equivalent field of view, the physical aperture of an EF-S lens designed for an APS-C camera will be smaller than that for a full frame lens, but that's because the focal lengths will be different.