I've been working on learning how to use a wide variety of photographic processes. The norm nowadays is fresh out of the box factory made gelatin silver coated paper exposed under an enlarger using small negatives. The hand crafted processes that I am interested in as of late are generally referred to as Alternate Processes. All of the chemicals are coated onto paper by hand to create a light sensitive emulsion, not by a machine in a factory thus being an alternative process (apparently). A 4x5 inch negative is placed directly in contact with the emulsion of the paper with a sheet of glass on top, creating a sandwich of sorts. Even without much machinery involved this process of contact printing creates very beautiful prints.
As of this posting I have completed...
Van Dyke Brown
I intend to continue the project with a series of new photos, adding hand coated Gelatin Silver prints, Albumen and eventually Tin Type / Ambrotypes
The negative was exposed in a pinhole camera for 6 minutes. The film used was Ilford HP5+ and it was developed in D-76 with a 1+1 dilution.
Each of the prints were made by contact and not enlargement. The 4x5inch negative is placed directly onto the hand coated sheet of paper. The particular paper I am using is Cranes Platinotype. After the negative is sandwiched on top of the freshly coated paper it is set in the sun or under a UV light source for a period of time then developed.
The cyanotype has been around since at least 1842 when Sir John Herschel wrote of it. It image is based on ferric salts and creates a prussian blue tone. The cyanotype below uses the following chemicals to create the image:
Ferric Ammonium Citrate
The Van Dyke Brown, or Brown Print is a close cousin of the Cyanotype yet it has a silver based component to its image, it required the following chemicals to create the image:
Ferric Ammonium Citrate
A Kallitype produces a tonal scale and appearance that is very similar to some Platinum and Palladium prints, but at much cheaper prices. Unlike the Cyanotype and Van Dyke Brown, much of the magic of the Kallitype happens during development... The chemicals required to make this image were:
The Ziatype is a more modern process developed around 1994 by Richard Sullivan. The chemicals used to create the Ziatype below were:
Ammonium Ferric Oxalate
Lithium Palladium Chloride