Assertion: lens | /r/CapableOf | blur the background
Facets:
value: because of their shallower depth of field
type: CAUSE
Source sentences:
text: Longer lenses magnify the subject more, apparently compressing distance and (when focused on the foreground) blurring the background because of their shallower depth of field.
text: Longer lenses magnify the subject more, apparently compressing distance and (when focused on the foreground) blurring the background because of their shallower depth of field.