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

depth of focus n. Optics and Photography (with reference to a lens or lens system) (a) the distance between the nearest and farthest objects which may be simultaneously brought into focus or (with reference to an image or photograph) which are judged to be in focus; (also) the capacity for simultaneously bringing into focus objects at different distances; (b) the distance between the two extreme positions behind a lens at which an image may be judged to be in focus.In sense (a) perhaps with reference to sense 5e; depth of field (at field n.¹ 14c) is now often preferred in this sense.

ΘΚΠ

the world > physical sensation > sight and vision > optical instruments > lens > [noun] > qualities of lenses

power1673

refracting angle1676

resolution1831

depth of focus1852

astigmatism1859

aplanatism1869

apochromatism1887

covering power1895

coverage1936

asphericity1944

parfocality1955

1852 Mass. Reg. 328/1 Our panorama of Boston proves the perfection of our instrument. The depth of focus is from the steeple of Park-street Church to the lower Light House and Nahant Hotel.

1857 Jrnl. Photogr. Soc. 21 Dec. 114/2 I certainly believe in the existence of a quality I call depth of focus, and that certain lenses possess it to a much greater extent than others.

1888 Photogr. News 15 June 382/2 T. Sebastian Davis said that depth of focus, as generally understood, was..the amount of play which the focussing screen might have without losing definition.

1939 K. Henney & B. Dudley Handbk. Photogr. iv. 90 A useful accessory included on most miniature cameras and on many larger cameras is a depth-of-field, or depth-of-focus, table.

1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) II. 431/1 There may be some latitude in focusing in which there is no apparent change in sharpness. This distance is known as the depth of focus.

2005 K. Malkiewicz & M. D. Mullen Cinematogr. (ed. 3) i. 20/2 Unlike depth of field, depth of focus actually decreases for wide-angle prime lenses.

2013 Cambr. Evening News (Nexis) 17 May The aperture you use will have to give enough depth of focus so that the reflected image will also be sharp.

单词	depth of focus
释义	> as lemmas depth of focus depth of focus n. Optics and Photography (with reference to a lens or lens system) (a) the distance between the nearest and farthest objects which may be simultaneously brought into focus or (with reference to an image or photograph) which are judged to be in focus; (also) the capacity for simultaneously bringing into focus objects at different distances; (b) the distance between the two extreme positions behind a lens at which an image may be judged to be in focus.In sense (a) perhaps with reference to sense 5e; depth of field (at field n.¹ 14c) is now often preferred in this sense. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > lens > [noun] > qualities of lenses power1673 refracting angle1676 resolution1831 depth of focus1852 astigmatism1859 aplanatism1869 apochromatism1887 covering power1895 coverage1936 asphericity1944 parfocality1955 1852 Mass. Reg. 328/1 Our panorama of Boston proves the perfection of our instrument. The depth of focus is from the steeple of Park-street Church to the lower Light House and Nahant Hotel. 1857 Jrnl. Photogr. Soc. 21 Dec. 114/2 I certainly believe in the existence of a quality I call depth of focus, and that certain lenses possess it to a much greater extent than others. 1888 Photogr. News 15 June 382/2 T. Sebastian Davis said that depth of focus, as generally understood, was..the amount of play which the focussing screen might have without losing definition. 1939 K. Henney & B. Dudley Handbk. Photogr. iv. 90 A useful accessory included on most miniature cameras and on many larger cameras is a depth-of-field, or depth-of-focus, table. 1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) II. 431/1 There may be some latitude in focusing in which there is no apparent change in sharpness. This distance is known as the depth of focus. 2005 K. Malkiewicz & M. D. Mullen Cinematogr. (ed. 3) i. 20/2 Unlike depth of field, depth of focus actually decreases for wide-angle prime lenses. 2013 Cambr. Evening News (Nexis) 17 May The aperture you use will have to give enough depth of focus so that the reflected image will also be sharp. extracted from focusn. < as lemmas
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> as lemmas