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单词 twin-lens reflex
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twin-lens reflex
twin-lens reflex n. Photography a camera with two lenses with equal focal length (typically one above the other), of which one is the taking lens, and the other projects the image via a mirror to a viewfinder; also attributive; abbreviated TLR.The advantage of this design is that the photographer sees (almost) the same view that the camera records, without the blacking out during exposure that occurs with a single-lens reflex.
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1876 Brit. Jrnl. Photogr. 28 July 349/1 The old method exclusively adopted before twin lens cameras were introduced must be reverted to.]
1907 Brit. Jrnl. Photogr. 448/1 A smaller and less expensive pattern of the twin-lens reflex is made without the reversing back.
1957 Pop. Mech. Aug. 173 Shooting what you see in the viewer at a range as close as 12 in. can be done with a twin-lens reflex camera if you first compensate for the difference in the fields of view of the taking lens and the viewing lens.
2001 O. Sacks Uncle Tungsten xii. 138 The Leica was his favorite camera when he went hiking; he preferred to use a twin-lens reflex, a Rolleiflex, for general use.
extracted from twinadj.n.
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更新时间:2024/9/20 21:46:13