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 #:
000401
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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WESTERN ELECTRIC SYSTEM 381 modulation is only 1 db below full modulation, and for the occasional peaks which reach full modulation for a few thousandths of a second, the distortion is not detectible. Let us assume that we have so regulated the recording that FIGURE 6 At the left is a microphotograph of two frames from a recent picture, illustrating variable density sound track. The enlargement is to slightly over twice actual size. At the right is another example of variable density sound track. only for occasional peaks is 100% modulation reached, and we have so controlled developments that the product of the positive and negative gammas is correct. It must be recognized that no amount of care in control of development will insure exact and unchanging value of gammas, either for negative record or for release prints. Some tolerances must be determined, fixing extremes of variation in development within which the sound quality is not noticeably affected. In the reproduction of the sound record, four factors must be considered. These are: (1) the contrast laid down by the light valve and developed in the negative processing; (2) the