Handbook for motion picture and stereopticon operators (1908)

Page scan 00030 from Handbook for motion picture and stereopticon operators

Record Details:

Title:
Handbook for motion picture and stereopticon operators
Date:
1908
Publisher:
Washington, D.C. : The Knega Company, Inc.
Volume:
Handbook for motion picture and stereopticon operators
Leaf #:
00030
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Niles Essanay Silent Film Museum
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Date Added:
May 02, 2025
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24 Motion Picture that the negative and the lenses are at slightly different distances from the subject. The result of continued operation is a length of negative film with similar pictures thereon, each picture differing slightly from the preceding one owing to the constant movement of the object photographed. Two hundred and fifty pictures per second have been made in this camera and there is no limit to the speed, except illumination and sensitiveness of film. Lenses. The choice of a lens for a camera should be governed by the focal length, together with the rapidity and depth of focus, it being understood, of course, that the lens is free from astigmatism and from chromatic and spherical aberration. The shorter the back focus the greater the depth of focus; and the larger the proportion of the aperture to the equivalent focus the greater the rapidity.