A complete treatise on the art of retouching photographic negatives and clear directions how to finish & colour photographs (1901)
Johnson, Robert · London, Marion · leaf 150
ed varies from 120 to 200 H. & D. Since the ist January, 1891, Marion Sc Co.’s Dry Plates have been issued with an absolutely correct exposure number on each box. This number, denoting the rapidity of the plate, is obtained by the Hurter & Driffield system, which from repeated and exhaustive… … Price in Leather Wallet with Light Scale for one Latitude 8/0 Price of extra Light Scales for any latitude each 6d. With Complete Set of 13 Inght Scales in Leatlier Wallet 14/0 Actinographs are kept in stock with Light Scales for any of the following: — 0° E(piator Guiana, Victoria Nyanza, Sumatra,…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
