Journal of the Society of Motion Picture Engineers ( Volume: 30, Issue: 2, February 1938)

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Twenty Years of Development of High-Frequency Cameras

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: The high-frequency camera of the Zeiss-Ikon Company has behind it twenty years of development. The original model, designed by H. Lehmann, appeared in 1917 as the Ernemann high-frequency camera. The principle is based upon optical compensation, to which end a reflecting drum with exterior mirrors was employed as compensating element. Films were exposed at a frequency up to 500 pictures per second. The new model, which appeared upon the market in 1930, likewise depends upon mirror compensation, except that instead of the exterior mirrors a reflector drum is supplied with mirrors on the inside according to the patents of Professor Thorner. In this way an extraordinarily simple driving mechanism has been obtained, and a very compact form; with a capacity of approximately 60 meters of standard 35-mm, film, the size of the camera does not exceed the dimensions of a normal cine camera. The latest model permits an exposure frequency of about 1500 pictures per second. The camera is suited for use in technical photography of all kinds. It can be equipped with intermediate lenses for close-ups or with a supplementary distance tube for distance exposures. For photographing micro high-frequency films a particular apparatus has been developed. To evaluate the exposures, a time-marking device is used, in which a glow-lamp, controlled by an electric tuning-fork, produces time records on the film at periods of 1/1000 sec.
Publication Date: 1938-02-01
DOI: 10.5594/J14698
Link: https://doi.org/10.5594/J14698
Author(s): H. E. A. Joachim

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H. E. A. Joachim; Twenty Years of Development of High-Frequency Cameras, Journal of the Society of Motion Picture Engineers ( Volume: 30, Issue: 2, February 1938); SMPTE, 1938. Available at https://doi.org/10.5594/J14698

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H. E. A. Joachim; Twenty Years of Development of High-Frequency Cameras, Journal of the Society of Motion Picture Engineers ( Volume: 30, Issue: 2, February 1938); SMPTE, 1938. Available at https://doi.org/10.5594/J14698

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<span class="citation">H. E. A. Joachim; <cite>Twenty Years of Development of High-Frequency Cameras</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 30, Issue: 2, February 1938); SMPTE, 1938. Available at <a href="https://doi.org/10.5594/J14698" target="_blank" rel="noopener">https://doi.org/10.5594/J14698</a></span>

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H. E. A. Joachim; Twenty Years of Development of High-Frequency Cameras, Journal of the Society of Motion Picture Engineers ( Volume: 30, Issue: 2, February 1938); SMPTE, 1938
doi: 10.5594/J14698
url: https://doi.org/10.5594/J14698

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<li>
H. E. A. Joachim; <cite id="bib-10-5594-j14698">Twenty Years of Development of High-Frequency Cameras</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 30, Issue: 2, February 1938); SMPTE, 1938
<span class="doi">10.5594/J14698</span>
</li>