Photographic Reproduction Processes

Photographic Reproduction Processes by Peter C. Duchochois is a meticulous 1891 treatise that traces the art and craft of non-silver photographic impressions and their 19th-century foundations. Duchochois compiles practical recipes, coating techniques, apparatus notes and illustrated methods for processes such as the cyanotype (blue print), cyanofer, ferro-tannate (ink) prints, cuprotype, aniline and primuline/diazotype methods, uranotype and platinotype, carbon transfer and various tracing-on-metal techniques. Grounded in the discoveries of pioneers like Sir John Herschel and Burnett, the book contextualizes how chemistry and visual experimentation shaped early photographic reproduction and studio practice. Written for practitioners of its day, the text reads today as both a historical document and a hands-on manual for alternative-process artists, conservators, photographic historians and collectors. Clear procedural descriptions are paired with period illustrations and quoted authorities, offering insight into the evolution of photographic chemistry and aesthetic priorities of the late 19th century. Note: these historic procedures involve hazardous chemicals and outdated safety standards—seek expert guidance before attempting practical work. Ideal for anyone fascinated by photographic history, analog processes, or the intersection of art and early photographic science.