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Caffenol is a photographic alternative process whereby phenols, sodium carbonate and optionally vitamin C are used in aqueous solution as a film and print photographic developer. [ 1 ] [ 2 ] Other basic (as opposed to acidic ) chemicals can be used in place of sodium carbonate; however, sodium carbonate is the most common.
Caffenol; Calotype, 1841; Cameo; Carbon print, 1855; Carbro Print; Carbro; Casein pigment; Catalysotype; Catalisotype; Catatype; Cellulose diacetate negative ...
Photographic processing or photographic development is the chemical means by which photographic film or paper is treated after photographic exposure to produce a negative or positive image.
In photography, toning is a method of altering the color of black-and-white photographs. In analog photography, it is a chemical process carried out on metal salt-based prints, such as silver prints, iron-based prints (cyanotype or Van Dyke brown), or platinum or palladium prints. This darkroom process cannot be performed with a color photograph.
In colour and chromogenic black-and-white photography, a similar development process is used except that the reduction of silver simultaneously oxidizes the paraphenylene colour developing agent which then takes part in the production of dye-stuffs in the emulsion by reacting with the appropriate couplers. There are three distinct processes ...
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Caffenol; Daguerreotype; Gum bichromate and other Pigmented Dichromated Colloids which are used to directly generate a photographic print; Platinum Process and Palladium Process; Carbon print and various similar processes which use a non-sensitive intermediate layer to generate a photographic image
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