The MagnaScope 35mm Half-Frame Projection System

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: A motion-picture print format is proposed using a height of two perforations instead of the usual four. As an interim measure, the four-perforation pull-down is retained with two reels interlaced head to tail on one roll of film, with two soundtracks, one on each side. In contrast to a similar system patented in 1912, which used vertical anamorphosis to maintain a 1.33:1 aspect ratio, the present system uses a “flat” picture to obtain a 1.85:1 aspect ratio. This system becomes more viable today because of the use of a new auxiliary lens that can be added to the prime lens of the projector to give the required distortion-free magnification to fill the screen. Additional assistance is given to this system by new film types available for intermediates.
Publication Date: 1979-02-01
DOI: 10.5594/J10447
Link: https://doi.org/10.5594/J10447
Author(s): Joseph W. Schmit, Barnard L. Sackett

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Joseph W. Schmit and Barnard L. Sackett; The MagnaScope 35mm Half-Frame Projection System, SMPTE Journal ( Volume: 88, Issue: 2, February 1979); SMPTE, 1979. Available at https://doi.org/10.5594/J10447

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Joseph W. Schmit and Barnard L. Sackett; The MagnaScope 35mm Half-Frame Projection System, SMPTE Journal ( Volume: 88, Issue: 2, February 1979); SMPTE, 1979. Available at https://doi.org/10.5594/J10447

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<span class="citation">Joseph W. Schmit and Barnard L. Sackett; <cite>The MagnaScope 35mm Half-Frame Projection System</cite>, SMPTE Journal ( Volume: 88, Issue: 2, February 1979); SMPTE, 1979. Available at <a href="https://doi.org/10.5594/J10447" target="_blank" rel="noopener">https://doi.org/10.5594/J10447</a></span>

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Joseph W. Schmit and Barnard L. Sackett; The MagnaScope 35mm Half-Frame Projection System, SMPTE Journal ( Volume: 88, Issue: 2, February 1979); SMPTE, 1979
doi: 10.5594/J10447
url: https://doi.org/10.5594/J10447

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<li>
Joseph W. Schmit and Barnard L. Sackett; <cite id="bib-10-5594-j10447">The MagnaScope 35mm Half-Frame Projection System</cite>, SMPTE Journal ( Volume: 88, Issue: 2, February 1979); SMPTE, 1979
<span class="doi">10.5594/J10447</span>
</li>