Hepworth, Thomas Cradock, -1905 · London : Hazell, Watson, and Viney · leaf 69
57 AMATEUR PHOTOGRAPHERS. frame at some distance from, and presented towards a window, employing what, for all practical purposes, are parallel rays. Another valuable contrivance for reducing pictures to lantern size has been produced by Messrs. Shew, and this has an advantage in forming an… … Fig. 20. the camera is removed from its grooves, and the attachment put in its place, as seen in fig. 20. This apparatus consists in reality of an extra camera, formed of two boxes, one sliding within the other, as a help to focussing. The outer end of this box has a groove to hold the sensitive…
Slides (Photography) · Photography
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