Journal of the Society of Motion Picture Engineers ( Volume: 32, Issue: 4, April 1939)

[ACTIVE]

The Metro-Goldwyn-Mayer Semi-Automatic Follow-Focus Device

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: During recent years an important problem in major-studio cinematography has been that of following focus. Due to the shallow depth of field in modern lenses when used at maximum apertures, it is necessary to alter the focus frequently during the filming of a scene. In moving-camera shots, which are being used with increasing frequency, this problem is naturally aggravated, since both camera and players may move. The use of “blimped” cameras for sound pictures also aggravates the cameraman's problems. as finder parallax is greatly increased by placing the finder outside the camera “bungalow.” At the Metro-Goldwyn-Mayer Studio these problems have been simplified by the use of the semi-automatic follow-focus device. This consists of a finder which is both focused and pivoted to correct for parallax as the lens is focused. Individual cams coordinate the finder movement with the characteristics of any given lens.
Publication Date: 1939-04-01
DOI: 10.5594/J16562
Link: https://doi.org/10.5594/J16562
Author(s): J. Arnold

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J. Arnold; The Metro-Goldwyn-Mayer Semi-Automatic Follow-Focus Device, Journal of the Society of Motion Picture Engineers ( Volume: 32, Issue: 4, April 1939); SMPTE, 1939. Available at https://doi.org/10.5594/J16562

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J. Arnold; The Metro-Goldwyn-Mayer Semi-Automatic Follow-Focus Device, Journal of the Society of Motion Picture Engineers ( Volume: 32, Issue: 4, April 1939); SMPTE, 1939. Available at https://doi.org/10.5594/J16562

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<span class="citation">J. Arnold; <cite>The Metro-Goldwyn-Mayer Semi-Automatic Follow-Focus Device</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 32, Issue: 4, April 1939); SMPTE, 1939. Available at <a href="https://doi.org/10.5594/J16562" target="_blank" rel="noopener">https://doi.org/10.5594/J16562</a></span>

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J. Arnold; The Metro-Goldwyn-Mayer Semi-Automatic Follow-Focus Device, Journal of the Society of Motion Picture Engineers ( Volume: 32, Issue: 4, April 1939); SMPTE, 1939
doi: 10.5594/J16562
url: https://doi.org/10.5594/J16562

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<li>
J. Arnold; <cite id="bib-10-5594-j16562">The Metro-Goldwyn-Mayer Semi-Automatic Follow-Focus Device</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 32, Issue: 4, April 1939); SMPTE, 1939
<span class="doi">10.5594/J16562</span>
</li>