When made correctly, toned Kallitype prints are virtually identical to Platinum/Palladium prints and are just as archival. Using different combinations of developers and toners, a fairly wide range of different color tones can be achieved, from warm browns to eggplant purples to charcoal blacks. Kallitypes are labor intensive and use a combination of silver nitrate and ferric oxalate to coat the paper. A negative the size of the print is placed on the dried paper, exposed to UV light, then developed, toned, fixed, cleared and washed. These Kallitypes are toned in either Palladium or Gold.
Platinum/Palladium prints are renowned for their depth and quality, and were made by the photographic masters of the early 20th century. These Platinum/Palladium prints are made using the Na2 method, coating the paper with ferric oxalate, palladium and platinum. A negative the size of the print is placed on the dried paper, exposed to UV light, washed and cleared.
Cyanotype Prints are one of the most simple "alternative" handmade photographic print processes. A mixture of ferric ammonium citrate and potassium ferricyanide is applied to the paper. After drying, a negative is placed on the paper and exposed to UV light. The image develops quickly in a water bath.
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Cyanotype over Palladium Toned Kallitype
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Grove, Owls Head, Maine. Palladium Toned Kallitype (Henry Hall Black Developer) on Arches Platine Paper, 7x10.5"