| 单词 | telephotographic lens |
| 释义 | > as lemmastelephotographic lens 1. Designating a compound camera lens in which the individual lenses are combined in such a way that the focal length of the lens is greater than its physical length, providing a relatively narrow field of view and powerful magnification. Chiefly in telephotographic lens. Cf. telephoto adj. 1.The first practical lens of this type was patented in 1891 by English optician Thomas Rudolphus Dallmeyer (1859–1906). ΘΚΠ society > leisure > the arts > visual arts > photography > camera > parts and accessories of camera > [adjective] > types of lens flat field1841 wide-angle1865 slow1867 wide-angled1873 fast1877 rapid1878 fish-eye1882 sharp1883 symmetrical1890 telephotographic1891 telephotographic lens1891 narrow-angle1893 stigmatic1896 tele-negative1898 tele-positive1898 bloomed1945 soft1945 wide-field1950 1891 Photogr. News 18 Dec. 870/1 Mr. T. R. Dallmeyer gave a description of his new telephotographic lens, referring to diagrams on the board. 1911 Encycl. Brit. XXI. 513/2 In such a telephotographic system..anastigmatism, flatness of field, and rectilinearity are secured over a fairly large field. 1913 H. Chapman Jones Photogr. To-day xviii. 295 The telephotographic lens will give a large and well-defined image. 1942 Amer. Jrnl. Archaeology 46 333 A photograph taken from the south, with a telephotographic lens, is published by Ashby. < as lemmas |
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