Assertion: focal plane shutter | /r/MadeOf | a pair of light-tight curtains
Facets:
Source sentences:
text: Mechanical focal-plane shutters consist of a pair of light-tight curtains that move to uncover the sensor during the exposure time.
text: Mechanical focal-plane shutters consist of a pair of light-tight curtains that move to uncover the sensor during the exposure time.
text: Mechanical focal-plane shutters consist of a pair of light-tight curtains that move to uncover the sensor during the exposure time.