Poznan 1932. published by Factory of plates, membranes, papers and photographic chemicals Alfa. 12x18.5 cm, pp. 122, sepia photographs on separate pages, soft cover. Very good condition.
Contents include: What photography gives us. How to photograph: equipment, how a photographic image is formed, types of cameras, lenses, negative material, film or plate. Alpha photographic plates: types of plates, developing photographs, strengthening and weakening negatives. Alpha photographic films: developing web films. Alpha photographic papers: types, copying and developing papers, tinting prints, enlarging. Alpha chemicals: thiol, flash powder.