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
Doc Type: Journal Article
Article Type: research-article
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
Link: https://doi.org/10.5594/J05533
Author(s): J. F. Westerberg

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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>