The stereoscope and stereoscopic photography (1890)
Drouin, F. (Felix) · Bradford ; London : Percy Lund, The Country Press · leaf 58
board, furnished with a handle. Atone end the prismatic lenses are fixed, at the otheris a frame intended to hold the photographs. AND STEREOSCOPIC PHOTOGRAPHY. 51 This frame can be moved backwards and forwardson the baseboard for the purpose of focussing. (Fig- 37). This form of stereoscope has… … Fig. 37- pattern is very low, about half-a-crown, or eventwo shillings for the cheaper makes, is the usualretail price. Duboscq (1857) invented an interesting mod-ification, which renders adaptation to all sightspossible without varying the distance between thetwo optical systems. In his…
Stereoscope · Photography, Stereoscopic
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