Wall, E. J. (Edward John), 1860-1928 · London, Hazell, Watson, & Viney, ld. · leaf 8
Amateur Photographer Library— Advertisements. V WATSON’S NEW CONVERTIBLE LENS. THE HOLOSTIGIYIAT. Series I. F/6'I. … PRICE LIST. 1 Single Lenses Aperture f/ii'5. Working Combined Size of Prices, with Focus. Aperture. Plate. Iris Diaphragm. Focus of , f'oeus of Front. Back. 1 ins. ins. f s. d. ins. ins. i 4 4 10 0 7l 6 4x3 1 1 i/6-i 5 0 0 44 X 34 7j 7i 44 f/6‘5 5 10 0 l\ 44 X 4 4 u 44 1/6-t 6 0 0 84 5x4 5 i f/6-5…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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