hyperfocaladj.

/hʌɪpəˈfəʊkəl/

Etymology: < hyper- prefix 1a + focal adj.

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.

ΘΚΠ

society > leisure > the arts > visual arts > photography > action of taking photograph > technical factors > [adjective] > types of focusing

hyperfocal1905

retrofocus1951

1905 W. L. F. Wastell & R. C. 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.

1957 S. W. Amos & D. C. 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.

1961 G. Millerson Technique Television Production iii. 34 We can adjust any camera lens system so that it is focused on its hyperfocal plane.

This entry has not yet been fully updated (first published 1976; most recently modified version published online March 2019).

单词	hyperfocal
释义	hyperfocaladj. /hʌɪpəˈfəʊkəl/ Etymology: < hyper- prefix 1a + focal adj. 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. ΘΚΠ society > leisure > the arts > visual arts > photography > action of taking photograph > technical factors > [adjective] > types of focusing hyperfocal1905 retrofocus1951 1905 W. L. F. Wastell & R. C. 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. 1957 S. W. Amos & D. C. 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. 1961 G. Millerson Technique Television Production iii. 34 We can adjust any camera lens system so that it is focused on its hyperfocal plane. This entry has not yet been fully updated (first published 1976; most recently modified version published online March 2019). < adj.1905
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