| 摘要 |
The camera has first and second sprocket rollers for passing film into and receiving film from a film gate which are positively geared together to assure uniform tension and thus avoid frame line movement. In addition, an optical prism arrangement is provided providing a folded optical path to enable accommodation of a longer back focus objective lens length than could otherwise be accommodated within a given camera casing size. A rotating multi-surfaced prism is mounted on the same shaft as one of the sprocket rollers to cause image movement through the film gate with movement of the film so that continuous film movement can be realized. A rotatable shutter intercepts the light to the film gate and is positively interconnected with rotation of the multi-surfaced prism and sprocket rollers such that a series of images can be successively photographed during continuous film movement. Phase relationships between the first and second sprockets can be adjusted to provide a desired tension on the film passing through the film gate, the multi-surfaced prism shutter and sprocket rollers all thereafter rotating in precise synchronous relationship.
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