Assertion: telephoto lens's length | /r/HasProperty | 400mm
Facets:
value: likewise
type: DEGREE
Source sentences:
text: The effective focal length of a 250mm lens on a digital camera is 400mm, so divide 400 by 100 to arrive at four.
text: Likewise, if the telephoto on your compact camera is 300mm and you attach a Canon EF-S 55-250mm to your T2i, the actual focal length of that lens would be 400mm.