The stereoscope and stereoscopic photography (1890)
Drouin, F. (Felix) · Bradford ; London : Percy Lund, The Country Press · leaf 55
Fig. 32. adjustment of the lenses is not, however, withoutits use, for by varying their distance from thepicture, the refraction of the rays is also varied,so that generally a distance can be found at whichthe two pictures are superposed perfectly andwithout effort. We have frequently found thatin… … Fig. 33- the hand (Fig. 33) or mounted on a stand. AND STEREOSCOPIC PHOTOGRAPHY. 49 M. Donnadieu has improved the ordinarystereoscope* so as to allow it to be used for otherpictures besides those mounted on a card of theordinary shape. To do this he has mounted theroughened glass on a movable…
Stereoscope · Photography, Stereoscopic
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