| 单词 | focusing screen |
| 释义 | > as lemmasfocusing screen 26. Photography. More fully focusing screen. A flat piece of ground glass used to view and focus the image produced by a camera before taking a picture. ΘΚΠ society > leisure > the arts > visual arts > photography > camera > parts and accessories of camera > [noun] > focusing screen or system screen1847 autofocusing1923 autofocus1958 microprism1962 1847 J. Ellis Photography 16 The proper focus of the object having been obtained, the plate is in darkness inserted in the place of the ground-glass screen of the camera-obscura. 1858 T. Sutton Dict. Photogr. 56 The real image formed by a convex lens is received on a focussing screen. 1872 Cassell's Techn. Educator III. 1/2 At the reverse end of the box is fitted a screen of ground-glass, which is used for the purpose of adjusting both the position of the image upon the plate, and the distance of the lens from the sensitive surface. 1902 A. Watkins Photography 19 With the lens full open you will probably notice the image on the screen is not quite so sharply defined at the extreme corners as it is in the centre. 1962 A. Günther Microphotogr. in Libr. (Unesco) 23 Focusing is rather critical, and a precision camera with focusing screen should therefore be used. 1977 J. Hedgecoe Photographer's Handbk. 14 Some photographers find focusing on a screen more difficult than focusing with an image-coinciding rangefinder. 2009 M. Langford & P. Andrews Langford's Starting Photogr. (ed. 6) ii. 38/1 The distance from lens to film is the same as lens to screen (via the mirror). < as lemmas |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。