Cinematographic annual : 1930 (1930)

Record Details:

Title:
Cinematographic annual : 1930
Date:
1930
Publisher:
Hollywood : The American Society of Cinematographers, Inc.
Volume:
Cinematographic annual : 1930
Leaf #:
00067
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
{"Media History Digital Library","Richard Koszarski","Jeff Joseph"}
Coordinator:
Media History Digital Library
Description:
Date Added:
March 21, 2024
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OPTICAL SCIENCE IN CINEMATOGRAPHY 49 The first attempts to make a serious advance in the speed of lenses seems to have been made by C. C. Minor; in 1913 he was granted »»» Fig. 6 — Cooke Triplet. Fig. 7 — Zeiss Tessar. U. S. Patent No. 1077420, in which he went so far as to describe a construction for a lens whose aperture was twice as great as its focal lengths corresponding to its speed f : 0.5. These lenses seem to have been constructed on no theoretical principles but appear to have been assembled by adding one lens after another until some kind of result was achieved. The demand for faster lenses seems to have been stimulated, however, by the attempts to create them and in a few more years they began to appear from several sources. It will be impossible to deal with all of them but conforming to the general plan of this article we will confine ourselves to a consideration of some of the general lines of attack.