rotary shutter
noun
a camera shutter consisting of a rotating disk pierced with a slit that passes in front of the lens to expose the film or plate.
Words nearby rotary shutter
rotary joint,
rotary plough,
rotary plow,
rotary press,
rotary pump,
rotary shutter,
rotary tiller,
rotary valve,
rotary wing,
rotary-till,
rotate