| 释义 |
hyperfocal, a.|haɪpəˈfəʊkəl|
[f. hyper- 1 + focal a.]
Applied to the distance on which a camera must be focused to give the maximum depth of field (see quot. 1957), and to the object plane at this distance.
1905Wastell & Bayley Hand Camera viii. 96 The best position for the lens..is sometimes called the ‘hyperfocal distance’... By dividing the hyperfocal distance by two we get the distance beyond which everything is in focus. 1957Amos & Birkinshaw Television Engin. I. ix. 178 If a lens system is focused on infinity, the images are in focus..for all objects lying between infinity and the hyperfocal distance. If, however, the lens system is focused on the hyperfocal distance, images are in focus for all objects lying between infinity and half the hyperfocal distance. 1961G. Millerson Technique Television Production iii. 34 We can adjust any camera lens system so that it is focused on its hyperfocal plane. |