Society of Motion Picture Engineers : incorporation and by-laws (1927)

Page scan 000112 from Society of Motion Picture Engineers : incorporation and by-laws

Record Details:

Title:
Society of Motion Picture Engineers : incorporation and by-laws
Date:
1927
Publisher:
New York : Society of Motion Picture Engineers
Volume:
Transactions of the Society of Motion Picture Engineers (1927)
Leaf #:
000112
Language:
English
Subjects:
motion pictures, Cinematography -- Periodicals
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Library of Congress, MBRS, Moving Image Section
Sponsor:
Library of Congress, Motion Picture, Broadcasting and Recorded Sound Division
Coordinator:
Media History Digital Library
Description:
Preceeded by an unnumbered issue published in 1916 called: Incorporation and by-laws
Date Added:
September 12, 2024
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102 Transactions of 8.M.P.E., July 1927 It appears to be pretty certain that the first commercial motion picture projectors sold in America were provided with Petzval lenses made by the Company with which the writer is now connected and the same type is now used almost universally for the projection of motion pictures and to some extent for the projection of lantern slides. For the latter form of projection, however, and for the projection of opaque objects by means of reflected light, the triplet lens FRONT BACK Fig. 1 — Petzval Portrait Objective. FRONT BACK Fig. 2— Taylor Triplet. is better adapted and possibly less expensive. Of these three kinds of projection, the last is the most remote from the interests of motion picture engineers and, while interesting enough from the standpoint of the demands it makes on the projection lens, will not be discussed further here. The reasons why these two types of lenses are pre-eminently suited to these two respective kinds of projection are not difficult to find. Motion picture projection in the average house is a problem of projecting a picture which is small relative to the focal length of thB lens but which must be magnified to a degree which can reasonably be called enormous and yet with sharp definition and with all the brilliance of illumination possible. In respect of magnification of the