| 单词 | light-value shutter |
| 释义 | > as lemmaslight-value shutter light-value shutter n. Photography (now disused) a shutter having the aperture and shutter speed settings linked so that they can be altered together in such a way as to keep the amount of light admitted during an exposure constant. ΚΠ 1954 Sheboygan (Wisconsin) Press 11 Dec. 20/1 (advt.) ‘Ansco’ Super Regent with new ‘Light Value Shutter’. 1958 Newnes Compl. Amateur Photogr. ii. 38 The light-value shutter is a modern device..designed to make speed and aperture setting more easy, and making use of the light value system. < as lemmas |
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