Journal of the Society of Motion Picture Engineers ( Volume: 50, Issue: 3, March 1948)

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High-Speed Motion Pictures with Synchronized Multiflash Lighting

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 50, No. 3, pp. 199–207
Abstract: Equipment to synchronize a high-intensity flashlamp with a high-speed motion picture camera has been designed and built. The camera was a 16-mm, rotating-prism type and synchronization was accomplished by a brush-type contactor built into the camera. The electrical signal from the contactor was sent through a pulse-forming circuit to a trigger tube in the flashlamp circuit. The film speed was 1800 frames per second and the duration of each flash was about one microsecond. Resolving-power tests made by photographing a one-foot disk revolving at 1500 revolutions per minute showed the marked superiority of flash-lighting over continuous light at these speeds. The resolving power measured for a rapidly moving object was doubled by the use of multiflash lighting, and, even in the case of a stationary object, a 25 per cent increase was obtained.
Publication Date: 1948-03-01
DOI: 10.5594/J12611
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J12611
Author(s): R. A. AndersonNaval Ordnance Laboratory, White Oak, Maryland
W. T. WhelanNaval Ordnance Laboratory, White Oak, Maryland
Copyright: © 1948 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

(1) Edgerton H. E. , “Photographic use of electrical discharge flashtubes,” , J. Opt. Soc. Amer. , vol. 36 , p. 390 ; July, 1946 . EXTERNAL
(2) Carlson F. E. Pritchard D. A. , “Characteristics and applications of flashtubes,” , Illum. Eng. , vol. 42 , p. 235 ; February, 1947 . EXTERNAL

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R. A. Anderson and W. T. Whelan; High-Speed Motion Pictures with Synchronized Multiflash Lighting, Journal of the Society of Motion Picture Engineers ( Volume: 50, Issue: 3, March 1948); SMPTE, 1948. Available at https://doi.org/10.5594/J12611

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R. A. Anderson and W. T. Whelan; High-Speed Motion Pictures with Synchronized Multiflash Lighting, Journal of the Society of Motion Picture Engineers ( Volume: 50, Issue: 3, March 1948); SMPTE, 1948. Available at https://doi.org/10.5594/J12611

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<span class="citation">R. A. Anderson and W. T. Whelan; <cite>High-Speed Motion Pictures with Synchronized Multiflash Lighting</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 50, Issue: 3, March 1948); SMPTE, 1948. Available at <a href="https://doi.org/10.5594/J12611" target="_blank" rel="noopener">https://doi.org/10.5594/J12611</a></span>

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<li>
R. A. Anderson and W. T. Whelan; <cite id="bib-10-5594-j12611">High-Speed Motion Pictures with Synchronized Multiflash Lighting</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 50, Issue: 3, March 1948); SMPTE, 1948
<span class="doi">10.5594/J12611</span>
</li>