| 释义 |
defocus, v.|diːˈfəʊkəs|
[f. de- II. 1 + focus v.]
trans. To put out of focus; also intr., to go out of focus. So deˈfocus(s)ed ppl. a.
1935Proc. Inst. Radio Engineers XXIII. 1338 A defocused beam will cause..spot or pattern distortion. 1950H. Pender Electr. Engineers' Handbk. (ed. 4) II. 66 The apparent resolution is not appreciably impaired when the blue image is severely defocused. 1955Gloss. Terms Automatic Digital Computers (B.S.I.) 9 The ‘writing’ beam is initially defocused so as to excite a small circular area of the screen. 1958Engineering 21 Feb. 233/2 A more pleasing effect was obtained with the circular soft edged arrangement than with a de-focused primary beam. 1961G. Millerson Television Production iii. 49 The director's only solution is..to have cameras defocus when their shots are not being taken. |