Assertion: camera's shutter | /r/CapableOf | shorten the image of a car speeding
Facets:
Source sentences:
text: Distortion of fast-moving subjects: although no part of the film is exposed for longer than the time set on the dial, one edge of the film is exposed an appreciable time after the other, so that a horizontally moving shutter will, for example, elongate or shorten the image of a car speeding in the same or the opposite direction to the shutter movement.