| 单词 | keystone picture |
| 释义 | > as lemmaskeystone picture keystone picture n. Cinematography (now rare) a picture distorted by the keystone effect. ΚΠ 1914 J. B. Rathbun Motion Picture Making vi. 126 To avoid the keystone picture, the angle of the lens must be sufficiently great to bring in the edges. 1949 A. H. Lytel TV Picture Projection & Enlargem. iv. 101 This results in normal picture since the keystone picture on the tube face is ‘de-keystoned’ by its passage through the optical system. < as lemmas |
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