The stereoscope and stereoscopic photography (1890)
Drouin, F. (Felix) · Bradford ; London : Percy Lund, The Country Press · leaf 48
reater clearness.) 3 4* Fig. 23. superpose each other to The pictures g1 and dgive relief, but thepictures d and g2 re-main visible at eachside of the former.This causes no seriousinconvenience, but thelateral images can bedone away with byplacing between thetwo prisms an opaquepartition C,… … Fig. 24. 42 THE STEREOSCOPE These prismatic lenses are made as follows:—Cut in two, following a diameter D D a lens L ofabout 10 centimetres in diameter and 20 centi-meters focus. Then trim the two halves as indicated inFig. 25, so asto make themr e ct angu 1 ar,and fix them to-gether by theirsmall…
Stereoscope · Photography, Stereoscopic
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