darkroomdocMar 9, 20203 minPOLYFERRIC PIGMENT PRINT (P3)A photographic print with an image of pigment bound to paper in a hardened colloid. It is similar to Gum bichromate, but uses an iron salt
darkroomdocMar 5, 20202 minCUPROTYPECUPROTYPE: a photographic print of reddish brown Copper II Ferrocyanide (Hatchett’s Brown) pigment on paper.
darkroomdocFeb 3, 20202 minCOBALTOTYPEThis is an updated version of the Lumiere Brothers Cobalt Process of 1893.
