Journal of the Society of Motion Picture Engineers (1930-1949)

Record Details:

Title:
Journal of the Society of Motion Picture Engineers
Date:
1930-1949
Publisher:
New York, N.Y. : The Society
Volume:
Journal of the Society of Motion Picture Engineers
Leaf #:
000231
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
The Journal of the Society of Motion Picture Engineers (SMPE)Êdocuments the technological progress of the film industry, highlighting technical developments in production and exhibition. Of special interest are articles about special effects, theater practices, lighting, and the introduction of the 16mm format. Initially titled "Transactions of the Journal of the Society of Motion Picture Engineers."Digitized by the Prelinger Library and the Library of Congress Motion Picture, Broadcasting and Recorded Sound Division.
Date Added:
July 19, 2022
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50 'MM ftKD LONGER. FOCAL, L.EMGTHS 25 AMD 35 MM FOCAL LENGTHS * A*.OOO15* E.F.L.* T MAX. 0»MtMS\OMS »M INCHES Fig. 3. Lens and camera mounting dimensions from MIL Specification. parts, resulting in a finishing system that is extremely durable. At present, the series is available in two external enamel finishes: gray, to match a camera on which they are used; and black, for general service use. All control rings are adequately separated and are made as large as diameter clearances permit, with broad spaced knurls that facilitate easy manipulation, even though the operator may be wearing gloves. Focusing and iris scales are marked in easily read characters, especially designed (for all Bell & Howell lenses, not limited to this series) to prevent confusion of such characters as 3, 6 and 8, etc. The markings include full identification of the lens, its type, focal length in both inches and millimeters, filter size, sunshade thread, etc. The iris and focusing scales are designed to be read from the camera end. The lens name and filter information is designed to be read from the front of the lens. Special provision has been made to mount standard sized filters between sunshade and lens in a convenient recess divided between both, so when the sunshade is screwed in, the filter is trapped, and protected by the sunshade (Fig. 9). The filter can be easily inserted regardless of the position of the camera. If the lens is pointed down or held on the level, the filter can be dropped into the recess on the sunshade, and the sunshade screwed into the lens. If the lens is pointed up, the filter can be dropped into the recess on the lens mount, then trapped when the sunshade is screwed into place. The filter sizes are recognized industry standards (Table I). The lens mounts have been designed to use as few sizes as possible. Four are required for this entire series: 1 using size 5, 2 using size 6, 1 using 222 September 1952 Journal of the SMPTE Vol. 59