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 #:
000505
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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PEN TIPS Fig. 2. Enlargement of 16mm frame photographed with the Fastax camera in black-and-white at 5000 frames/sec. The heart is at the left and the electrocardiographic trace is at the right. The ink-writing pens (indicated by arrows) have just finished writing the electrical counterpart of the contraction of the heart from two different leads. Results and Comment Figure 2 is an enlarged frame from one of the motion pictures taken by the technique of cine-electrocardiography. The heart is on the left and the mirror image of the electrocardiographic trace is at the right. The pen has just finished writing the electrical complex which corresponds to the contraction of the heart. The apparatus used for positioning the mirror and the electrocardiographic machine makes it feasible to record photographically any or all parts of the electrical trace, i.e. one channel or two, a narrow strip or a wide one. It is also possible to vary the size and the field of the trace. The most satisfactory / stop for both 200-frame and Fastax pictures up to 2000 frame/sec was found to be 4.5. This gives a fair depth of focus which is necessary since we are dealing with an object which has a field of motion of 496 December 1952 Journal of the SMPTE Vol. 59