Assertion: camera's shutter | /r/CapableOf | become common
Facets:
value: in the 1980s
type: TEMPORAL
value: very
type: DEGREE
Source sentences:
text: Vertical shutters became very common in the 1980s (though Konica, Mamiya, and Copal first pioneered their use in the 1950s and 1960s, and are almost exclusively used for new cameras.