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  • high-speed movie camera

A camera designed to record at rates exceeding 50 fps. For frame rates up to about 500 fps, an ordinary pull-down mechanism can be used. From 500 to 1000 fps, the film must be moved continuously, the image being made to move at the same speed as the film by a rotating faceted glass block in front of the film. For ultrahigh speed recording, where the film cannot be moved at all, the image is focused on a small rotating plane mirror from which it is reflected to an arc of small lenses, each of which exposes a single frame.
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