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Journal of the Society of Motion Picture Engineers ( Volume: 16, Issue: 3, March 1931)
[ACTIVE]

The Depth of Field of Camera Lenses with Special Reference to Wide Film

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPE
Volume
16, No. 3, pp. 286–292
Abstract
An analysis is made of the factors governing the apparent depth of field in a picture as judged by a person seated in the audience. The greatest depth of field results, for the same final magnification on the screen, when the focal length of both the camera and projector lenses are kept as short as possible. This procedure results in a greater magnification in projection, and the graininess of the film begins to be apparent if the process is carried too far. Actually the limit of magnification with 35 mm. film has been nearly reached with existing materials. It is shown in this paper that the use of a wider film for both negative and positive does not alter the depth of field, provided the same over-all magnification is used. Similarly, making a large negative and a smaller print has no effect on the depth of field under comparable conditions.
Publication Date
1931-03-01
DOI
10.5594/J13010
ISSN
Print: 0097-5834
Link
https://doi.org/10.5594/J13010
Author(s)
Arthur C. HardyMassachusetts Institute of Technology.
Copyright
© 1931 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

  • 1 See, for example, “The Distribution of Light in Optical Systems,” Hardy A. C. , Journal of the Franklin Institute , Vol. 208 , No. 6 , December, 1929 . It may be remarked in passing that the f/number is a measure of the illumination on the film only when the lens is focused on an object at infinity. EXTERNAL
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Arthur C. Hardy; The Depth of Field of Camera Lenses with Special Reference to Wide Film, Journal of the Society of Motion Picture Engineers ( Volume: 16, Issue: 3, March 1931); SMPTE, 1931. Available at https://doi.org/10.5594/J13010
Snippet:
Arthur C. Hardy; The Depth of Field of Camera Lenses with Special Reference to Wide Film, Journal of the Society of Motion Picture Engineers ( Volume: 16, Issue: 3, March 1931); SMPTE, 1931. Available at https://doi.org/10.5594/J13010

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Preview:
Arthur C. Hardy; The Depth of Field of Camera Lenses with Special Reference to Wide Film, Journal of the Society of Motion Picture Engineers ( Volume: 16, Issue: 3, March 1931); SMPTE, 1931. Available at https://doi.org/10.5594/J13010
Snippet:
<span class="citation">Arthur C. Hardy; <cite>The Depth of Field of Camera Lenses with Special Reference to Wide Film</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 16, Issue: 3, March 1931); SMPTE, 1931. Available at <a href="https://doi.org/10.5594/J13010" target="_blank" rel="noopener">https://doi.org/10.5594/J13010</a></span>

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Preview:
Arthur C. Hardy; The Depth of Field of Camera Lenses with Special Reference to Wide Film, Journal of the Society of Motion Picture Engineers ( Volume: 16, Issue: 3, March 1931); SMPTE, 1931
doi: 10.5594/J13010
url: https://doi.org/10.5594/J13010
Snippet:
<li>
Arthur C. Hardy; <cite id="bib-10-5594-j13010">The Depth of Field of Camera Lenses with Special Reference to Wide Film</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 16, Issue: 3, March 1931); SMPTE, 1931
<span class="doi">10.5594/J13010</span>
</li>

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