Journal of the Society of Motion Picture Engineers ( Volume: 18, Issue: 5, May 1932)

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Size of Image as a Guide to Depth of Focus in Cinematography

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 18, No. 5, pp. 655–658
Abstract: The questions discussed in this paper are: (1) The depth of focus vs. depth of field. (2) The size of the permissible circle of confusion. Should it be a constant value or should it vary as in still photography? It is concluded that it should remain fixed. (3) Magnification as an index to depth. The simple rule that depth varies inversely as the square of the magnification may prove to be a very practical yardstick in the appraisal of depth in the photographing of near-by objects. A table is shown in which the magnification is estimated from the size of the figures on the ground glass. The corresponding depth is given for various stops.
Publication Date: 1932-05-01
DOI: 10.5594/J05533
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J05533
Author(s): J. F. WesterbergHollywood, Calif.
Copyright: © 1932 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1 Hardy A. C. : “The Depth of Field of Camera Lenses with Special Reference to Wide Film,” J. Soc. Mot. Pict. Eng. , xvi (March, 1931 ), No. 3 , p. 286 . EXTERNAL

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J. F. Westerberg; Size of Image as a Guide to Depth of Focus in Cinematography, Journal of the Society of Motion Picture Engineers ( Volume: 18, Issue: 5, May 1932); SMPTE, 1932. Available at https://doi.org/10.5594/J05533

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J. F. Westerberg; Size of Image as a Guide to Depth of Focus in Cinematography, Journal of the Society of Motion Picture Engineers ( Volume: 18, Issue: 5, May 1932); SMPTE, 1932. Available at https://doi.org/10.5594/J05533

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<span class="citation">J. F. Westerberg; <cite>Size of Image as a Guide to Depth of Focus in Cinematography</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 18, Issue: 5, May 1932); SMPTE, 1932. Available at <a href="https://doi.org/10.5594/J05533" target="_blank" rel="noopener">https://doi.org/10.5594/J05533</a></span>

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J. F. Westerberg; Size of Image as a Guide to Depth of Focus in Cinematography, Journal of the Society of Motion Picture Engineers ( Volume: 18, Issue: 5, May 1932); SMPTE, 1932
doi: 10.5594/J05533
url: https://doi.org/10.5594/J05533

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<li>
J. F. Westerberg; <cite id="bib-10-5594-j05533">Size of Image as a Guide to Depth of Focus in Cinematography</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 18, Issue: 5, May 1932); SMPTE, 1932
<span class="doi">10.5594/J05533</span>
</li>