A dictionary of photography for the amateur and professional photographer (1889)
Wall, E. J. (Edward John), 1860-1928 · New York : E. & H.T. Anthony · leaf 192
182 DICTIONARY OF PHOTOGRAPHY. The following sketch (fig. i) will show the arrangement, but it is now generally supersed ed by less expensive apparatus : — … Fig. i. EFBA, the camera; M, adjustable mirror; C, condenser; K, screw-rack to focus negative on screen ; N, negative ; L, the lens ; and r1, r2, r3, rays of light impinging on mirror, being reflected through condenser, negative, and lens to H, the focus, and con- tinued to screen, giving an…
Photography
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