The Sharpness Indicator

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: Editorial Note: Ivan Putora wrote this paper as a thesis at one of Czechoslovakia's official film schools. He was, obviously, unaware of the existence of a very interesting paper by Dwin R. Craig, titled “Image Sharpness Meter” and published in Photographic Science and Engineering, vol. 5, pp. 337–342, Nov.-Dec. 1961. It is interesting to note that both authors treat precisely the same matter, although in a slightly different way. Whereas Craig, starting from the same premises, develops an instrument for the direct measurement of best focus by purely photometrical means, Putora attempts to develop a comparison method, based on the same principle as that of Craig, but which can be employed in a general way for evaluating optical systems and/or photographic or TV-camera performance, either by eye or by instrument. Whereas Craig's method uses, as a starting point, focus measurements on enlarger easels, Putora's initial effort is directed at motion-picture camera focusing. We believe it will be of interest for the Journal readers to compare both authors' lines of thought and to draw their own conclusions. Putora's merit is, perhaps, to give a method that appears to be very simple in its applications, and to have it based on the customary sensitometric representations and calculations for image evaluation.—P.W.-T.
Publication Date: 1969-11-01
DOI: 10.5594/J10781
Link: https://doi.org/10.5594/J10781
Author(s): Ivan Putora, Pablo Weinschenk-Tabernero

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Ivan Putora and Pablo Weinschenk-Tabernero; The Sharpness Indicator, Journal of the SMPTE ( Volume: 78, Issue: 11, November 1969); SMPTE, 1969. Available at https://doi.org/10.5594/J10781

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Ivan Putora and Pablo Weinschenk-Tabernero; The Sharpness Indicator, Journal of the SMPTE ( Volume: 78, Issue: 11, November 1969); SMPTE, 1969. Available at https://doi.org/10.5594/J10781

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Ivan Putora and Pablo Weinschenk-Tabernero; The Sharpness Indicator, Journal of the SMPTE ( Volume: 78, Issue: 11, November 1969); SMPTE, 1969. Available at https://doi.org/10.5594/J10781

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<span class="citation">Ivan Putora and Pablo Weinschenk-Tabernero; <cite>The Sharpness Indicator</cite>, Journal of the SMPTE ( Volume: 78, Issue: 11, November 1969); SMPTE, 1969. Available at <a href="https://doi.org/10.5594/J10781" target="_blank" rel="noopener">https://doi.org/10.5594/J10781</a></span>

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Ivan Putora and Pablo Weinschenk-Tabernero; The Sharpness Indicator, Journal of the SMPTE ( Volume: 78, Issue: 11, November 1969); SMPTE, 1969
doi: 10.5594/J10781
url: https://doi.org/10.5594/J10781

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Ivan Putora and Pablo Weinschenk-Tabernero; <cite id="bib-10-5594-j10781">The Sharpness Indicator</cite>, Journal of the SMPTE ( Volume: 78, Issue: 11, November 1969); SMPTE, 1969
<span class="doi">10.5594/J10781</span>
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