英语词汇“back focus”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

> as lemmas

back focus

back focus n.

Brit.

/ˈbak ˌfəʊkəs/

U.S.

/ˈbæk ˌfoʊkəs/

in Photography (see quots.).

ΘΚΠ

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

depth of field1855

circle of least confusion1867

flatness of field1867

infinity1867

register1890

fixed focus1892

back focus1897

circle of confusion1906

isocentre1931

split-field1941

split-image1950

1897 E. J. Wall Dict. Photogr. (ed. 7) 295 ‘Back focus’..is the distance between the posterior lens and ground-lens.

1953 S. W. Amos & D. C. Birkinshaw Television Engin. I. ix. 202 The distance between the lens and the image, known as the back focus.

extracted from back-comb. form

as lemmas

单词	back focus
释义	> as lemmas back focus back focus n. Brit. /ˈbak ˌfəʊkəs/ , U.S. /ˈbæk ˌfoʊkəs/ in Photography (see quots.). ΘΚΠ society > leisure > the arts > visual arts > photography > action of taking photograph > technical factors > [noun] > type of focusing depth of field1855 circle of least confusion1867 flatness of field1867 infinity1867 register1890 fixed focus1892 back focus1897 circle of confusion1906 isocentre1931 split-field1941 split-image1950 1897 E. J. Wall Dict. Photogr. (ed. 7) 295 ‘Back focus’..is the distance between the posterior lens and ground-lens. 1953 S. W. Amos & D. C. Birkinshaw Television Engin. I. ix. 202 The distance between the lens and the image, known as the back focus. extracted from back-comb. form < as lemmas
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