Assertion: leaf shutter | /r/CapableOf | shut off the beam of light
Facets:
Source sentences:
text: Leaf shutters are usually fitted within a lens assembly ( central shutter ), or more rarely immediately behind ( behind-the-lens shutter ) or, even more rarely, in front of a lens, and shut off the beam of light where it is narrow.
text: Leaf shutters are usually fitted within a lens assembly ( central shutter ), or more rarely immediately behind ( behind-the-lens shutter ) or, even more rarely, in front of a lens, and shut off the beam of light where it is narrow.