A dictionary of photography for the amateur and professional photographer
A late nineteenth-century reference dictionary of photography by the English photographer and editor E. J. Wall, published in New York in 1889 for amateur and professional photographers. The pictures are plain line diagrams of lens cross-sections, drawn in hatched convex and concave forms with mounting lines, showing how optical elements are shaped and arranged; a designer could take from them a clean, technical schematic style built from simple hatching and thin rules.
