Salt print
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The salt print was the dominant paper-based photographic process for producing positive prints from 1839 until approximately 1860.
"Automatic photographic paper developed with table salt" by Alfons Mucha (1860–1939), for the Paper mill of Lancey.
Saint Michael's Church, Winterbourne, April 1859, salted-paper print, Department of Image Collections, National Gallery of Art Library, Washington, DC
Portrait of Jean-Francois Millet by photographer Felix Nadar.
Calotype
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Calotype or talbotype is an early photographic process introduced in 1841 by William Henry Fox Talbot, using paper coated with silver iodide. Paper texture effects in calotype photography limit the ab
Salt print
…Wash in clean water for 30 minutes - 1 hour. The salt print process is often confused with Talbot's slightly later 1841 calotype or "talbotype" process, in part because salt printing was mostly used for making prints from calotype paper negatives rather than live subjects. Calotype…
The Building of Nelson's Column, by William Henry Fox Talbot, c. 1843 calotype print
Thomas Duncan, by Hill & Adamson, c. 1844; medium: calotype print, size: 19.60 x 14.50 cm; from the collection of the National Galleries of Scotland
Calotype of Mississauga band Chief Kahkewaquonaby was taken August 4, 1845, in Edinburgh, Scotland, by Hill & Adamson. Images made that day are the oldest existing of a Native American. He is wearing a chiefs medal and his bag has the Ojibwa thunderbird. Getty Center