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 #:
0009
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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6 BATES AND RUNYAN July tubes each holding \.l/z liters of solution (Figs. 2 and 3). Special racks each holding two 35-mm strips in a film slide-type holder fit into the tubes. A rubber-edged vane, with a vertical movement operated by a series of pulleys over the tubes, is built into each rack. The whole unit is set into a water bath with temperature control. It is not necessary to employ exactly this design of apparatus, but mechanical agitation is strongly recommended. Photographic solution control tests are interpreted by reading the color densities of the type and sample sensitometric strips on an Fig. 2 Ansco color densitometer1 and comparing the plotted results for speed, density, and color-balance differences. Acceptable tolerances in processing solutions necessarily are high but specific acceptable limits must depend somewhat on circumstances. In general, solutions can be accepted that do not give speed differences greater than I/A stop or color-balance differences greater than 1/8 stop from type. Should an occasion arise where both the first developer and color developer or their respective replenishers show 1/8 stop color-balance difference, both in the same direction, the combination obviously would produce an intolerable result on the machine. Normal machine-processing times are recommended for the solution