The stereoscope and stereoscopic photography (1890)
Drouin, F. (Felix) · Bradford ; London : Percy Lund, The Country Press · leaf 45
yobtained. Zinelli (1857) used ordin-ary opera-glasses for examin-ing stereographs, but it isevident that if these are fixedfor looking at an ordinaryobject an effort will be essen-tial to bring about superposition. Double Total Reflection Stereoscope.—Girard-Teulon (1861) invented a stereoscope… … AND STEREOSCOPIC PHOTOGRAPHY. 39 the examination of large pictures, the two printsG D being placed in the usual position. Twoordinary prisms P P placed before the eyesproduce the desired convergence. J z.
Stereoscope · Photography, Stereoscopic
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