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Journal of the SMPTE ( Volume: 66, Issue: 7, July 1957)
[ACTIVE]

A New Automatic Iris Control for Motion-Picture Cameras

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPTE
Volume
66, No. 7, pp. 413–416
Abstract
The Bell & Howell Company's new Design 200-EE camera incorporates a self-powered compact automatic iris control. Mechanical power to drive the lens iris originates from a small direct-current, permanent-magnet motor driven by mercury batteries. A photovoltaic cell deflects a relay meter according to average scene brightness, and opening or closing the motor-battery circuit causes the lens iris to be properly positioned. The camera and its method of use are described.
Publication Date
1957-07-01
DOI
10.5594/J13879
ISSN
Print: 0361-4573
Link
https://doi.org/10.5594/J13879
Author(s)
Mervin W. La RueBell & Howell Co., 7100 McCormick Rd., Chicago 45.
Copyright
© 1957 Society of Motion Picture and Television Engineers, Inc.
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Mervin W. La Rue; A New Automatic Iris Control for Motion-Picture Cameras, Journal of the SMPTE ( Volume: 66, Issue: 7, July 1957); SMPTE, 1957. Available at https://doi.org/10.5594/J13879
Snippet:
Mervin W. La Rue; A New Automatic Iris Control for Motion-Picture Cameras, Journal of the SMPTE ( Volume: 66, Issue: 7, July 1957); SMPTE, 1957. Available at https://doi.org/10.5594/J13879

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Mervin W. La Rue; A New Automatic Iris Control for Motion-Picture Cameras, Journal of the SMPTE ( Volume: 66, Issue: 7, July 1957); SMPTE, 1957. Available at https://doi.org/10.5594/J13879
Snippet:
<span class="citation">Mervin W. La Rue; <cite>A New Automatic Iris Control for Motion-Picture Cameras</cite>, Journal of the SMPTE ( Volume: 66, Issue: 7, July 1957); SMPTE, 1957. Available at <a href="https://doi.org/10.5594/J13879" target="_blank" rel="noopener">https://doi.org/10.5594/J13879</a></span>

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Preview:
Mervin W. La Rue; A New Automatic Iris Control for Motion-Picture Cameras, Journal of the SMPTE ( Volume: 66, Issue: 7, July 1957); SMPTE, 1957
doi: 10.5594/J13879
url: https://doi.org/10.5594/J13879
Snippet:
<li>
Mervin W. La Rue; <cite id="bib-10-5594-j13879">A New Automatic Iris Control for Motion-Picture Cameras</cite>, Journal of the SMPTE ( Volume: 66, Issue: 7, July 1957); SMPTE, 1957
<span class="doi">10.5594/J13879</span>
</li>

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