Der Positivprocess auf Gelatine-Emulsionspapier mit besonderer Berücksichtigung der Chlorsilber-Gelatine sowie der Verwendung des Exponir-Automaten
An 1885 German photography manual on gelatin-emulsion positive printing, especially chloride-silver gelatin paper and an exposure automaton, written by E. A. Just and R. Schlotterhoss and published in Vienna for photographers and printers. Its pictures are geometric line diagrams of tonal gradation and exposure curves, with hatched and solid wedge shapes, step scales, and a fan of dashed converging lines, useful to a designer for sketching graded tone, perspective-like convergence, and technical diagram structure.
