The stereoscope and stereoscopic photography (1890)
Drouin, F. (Felix) · Bradford ; London : Percy Lund, The Country Press · leaf 46
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. … Fig 21. Refractive Stereoscopes.— These instru-ments are those almost exclusively employed atthe present time. They allow the use of prints 4o THE STEREOSCOPE mounted on one card,* and placed in their naturalposition, that is, the right picture at the right, andthe left at the left of the observer.…
Stereoscope · Photography, Stereoscopic
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