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Journal of the Society of Motion Picture and Television Engineers ( Volume: 59, Issue: 4, October 1952)
[ACTIVE]

Proposed American Standard PH22.90 Aperture Calibration of Motion Picture Lenses

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
STARTING ABOUT 1940, there has been a rapidly growing need in the motion picture industry for a more accurate expression of the photographic speed of a lens than is afforded by the simple f-number ratio. The Proposed American Standard appearing on the following pages is the product of many years' industrious and patient effort to achieve agreement on a standard photometric method of aperture calibration. It is published here for 6-month trial and criticism. All comments should be sent to Henry Kogel, SMPTE Staff Engineer, prior to April 15, 1953, along with a carbon for R. Kingslake, Chairman of the Optics Committee.
Publication Date
1952-10-01
DOI
10.5594/J01786
Link
https://doi.org/10.5594/J01786
Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J01786.json

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Proposed American Standard PH22.90 Aperture Calibration of Motion Picture Lenses, Journal of the Society of Motion Picture and Television Engineers ( Volume: 59, Issue: 4, October 1952); SMPTE, 1952. Available at https://doi.org/10.5594/J01786
Snippet:
Proposed American Standard PH22.90 Aperture Calibration of Motion Picture Lenses, Journal of the Society of Motion Picture and Television Engineers ( Volume: 59, Issue: 4, October 1952); SMPTE, 1952. Available at https://doi.org/10.5594/J01786

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Proposed American Standard PH22.90 Aperture Calibration of Motion Picture Lenses, Journal of the Society of Motion Picture and Television Engineers ( Volume: 59, Issue: 4, October 1952); SMPTE, 1952. Available at https://doi.org/10.5594/J01786
Snippet:
<span class="citation"><cite>Proposed American Standard PH22.90 Aperture Calibration of Motion Picture Lenses</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 59, Issue: 4, October 1952); SMPTE, 1952. Available at <a href="https://doi.org/10.5594/J01786" target="_blank" rel="noopener">https://doi.org/10.5594/J01786</a></span>

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Preview:
Proposed American Standard PH22.90 Aperture Calibration of Motion Picture Lenses, Journal of the Society of Motion Picture and Television Engineers ( Volume: 59, Issue: 4, October 1952); SMPTE, 1952
doi: 10.5594/J01786
url: https://doi.org/10.5594/J01786
Snippet:
<li>
<cite id="bib-10-5594-j01786">Proposed American Standard PH22.90 Aperture Calibration of Motion Picture Lenses</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 59, Issue: 4, October 1952); SMPTE, 1952
<span class="doi">10.5594/J01786</span>
</li>