| 单词 | focal-plane shutter |
| 释义 | > as lemmasfocal-plane shutter focal-plane shutter n. Photography a camera shutter which is located immediately in front of the focal plane, and which operates by passing a slit across the photographic plate or film.Because it exposes only a small portion of the plate or film at a time, a focal-plane shutter effectively allows faster speeds at a given relative aperture than a between-lens shutter. ΚΠ 1885 Photogr. News 27 Nov. 767/2 Barker's focal plane shutter has a great advantage over other exposers. 1905 Westm. Gaz. 21 Oct. 18/2 In photographing rapidly moving objects the focal-plane shutter does give unmistakable distortion. 1950 G. L. Wakefield Your Camera Lens & Shutter 86 A between-lens shutter exposes the whole of the film at once; the focal-plane shutter..exposes it piecemeal in strips. 2008 PTN Nov. 20/3 Why not build leaf shutters into them, in addition to the customary focal-plane shutter of DSLRs? < as lemmas |
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