On Correlations between the Spectral Sensitivity of Enlarging Papers and the Chromatic Corrections of Enlarging Lenses
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概要
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Ordinary enlarging papers show high spectral sensitivity in short wavelength region where ordinary enlarging lenses are not corrected, with the result that simple combination of both never give enlarged prints with sufficient sharpness.<BR>Three methods are proposed to compensate the discrepancy between the paper and the lens, i. e.: 1 to extend the chromatic corrections of enlarging lenses down to near ultraviolet. region, in order to match the spectral sensitivity of ordinary enlarging papers: 2 to dye-sensitize the emulsion of enlarging papers up to long wavelength region, where the ordinary enlarging lenses show satisfactory performances when shorter wavelength region be cut off by suitable light filters: or 3 to use ordinary "pure bromide" papers against ordinary enlarging lenses in combination with a light yellow filter.<BR>Similar propositions are given about enlargements upon "electrofax" papers as well as "gaslight"(i. e. chloride) papers.
- 社団法人 日本写真学会の論文
社団法人 日本写真学会 | 論文
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