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focal-plane shutter

[foh-kuh l pleyn] /ˈfoʊ kəl ˌpleɪn/
noun, Photography
1.
a camera shutter situated directly in front of the film.
Compare curtain shutter.
Origin
1900-1905
1900-05
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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