Assertion: tripod's use | /r/CapableOf | multiply focal length
Facets:
value: by the crop factor
type: OTHER
Source sentences:
text: Note that this formula uses the effective focal length of your lens, so if you’re using a crop sensor camera you’ll need to multiply the focal length by the crop factor so that 300mm lens would be a 450mm lens (crop factor of 1.5x) on a Canon crop sensor camera.