Edinburgh Ale: James Ballantine, Dr George Bell and David Octavius Hill by Hill & Adamson, a salt print from a calotype paper negative, c. 1844"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
The salted paper technique was created in the mid-1830s by English scientist and inventor Henry Fox Talbot. He made what he called "sensitive paper" for "photogenic drawing" by wetting a sheet of writing paper with a weak solution of ordinary table salt (sodium chloride), blotting and drying it, then brushing one side with a strong solution of silver nitrate. This produced a tenacious coating of silver chloride in an especially light-sensitive chemical condition. The paper darkened where it was exposed to light. When the darkening was judged to be sufficient, the exposure was ended and the result was stabilized by applying a strong solution of salt, which altered the chemical balance and made the paper only slightly sensitive to additional exposure. In 1839, washing with a solution of sodium thiosulfate ("hypo") was found to be the most effective way to make the results truly light-fast.
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 paper employed silver iodide instead of silver chloride. Calotype was a developing out process, not a printing out process like the salt print. The most important functional difference is that it allowed a much shorter exposure to produce an invisible latent image which was then chemically developed to visibility. This made calotype paper far more practical for use in a camera. Salted paper typically required at least an hour of exposure in the camera to yield a negative showing much more than objects silhouetted against the sky. Gold toning of the salted paper print was a popular technique to make it much more permanent.[1][2]
In the 21st century, salt prints remain a niche method in the art photography world.[3]
^AlternativePhotography (2010-03-02). "A dash of salt". AlternativePhotography.com. Retrieved 2023-08-05.
Sourcesedit
Taylor, Roger. Impressed by Light: British Photographs from Paper Negatives, 1840-1860 (NY, Metropolitan Museum of Art, 2007)
See alsoedit
"See some of the world's earliest photographs". BBC News. 5 August 2018. Article about an exhibition of over 100 salt prints, with video of several examples.
External linksedit
Wikimedia Commons has media related to Category:Salt prints.
William Henry Fox Talbot (1800-1877) and the Invention of Photography
Luminous Lint
February 16, 2024
salt, print, salt, print, dominant, paper, based, photographic, process, producing, positive, prints, from, negatives, from, 1839, until, approximately, 1860, edinburgh, james, ballantine, george, bell, david, octavius, hill, hill, adamson, salt, print, from, . The salt print was the dominant paper based photographic process for producing positive prints from negatives from 1839 until approximately 1860 Edinburgh Ale James Ballantine Dr George Bell and David Octavius Hill by Hill amp Adamson a salt print from a calotype paper negative c 1844 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 DCThe salted paper technique was created in the mid 1830s by English scientist and inventor Henry Fox Talbot He made what he called sensitive paper for photogenic drawing by wetting a sheet of writing paper with a weak solution of ordinary table salt sodium chloride blotting and drying it then brushing one side with a strong solution of silver nitrate This produced a tenacious coating of silver chloride in an especially light sensitive chemical condition The paper darkened where it was exposed to light When the darkening was judged to be sufficient the exposure was ended and the result was stabilized by applying a strong solution of salt which altered the chemical balance and made the paper only slightly sensitive to additional exposure In 1839 washing with a solution of sodium thiosulfate hypo was found to be the most effective way to make the results truly light fast 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 paper employed silver iodide instead of silver chloride Calotype was a developing out process not a printing out process like the salt print The most important functional difference is that it allowed a much shorter exposure to produce an invisible latent image which was then chemically developed to visibility This made calotype paper far more practical for use in a camera Salted paper typically required at least an hour of exposure in the camera to yield a negative showing much more than objects silhouetted against the sky Gold toning of the salted paper print was a popular technique to make it much more permanent 1 2 In the 21st century salt prints remain a niche method in the art photography world 3 Contents 1 References 2 Sources 3 See also 4 External linksReferences edit Calotype and other early paper processes Earlyphotography co uk Retrieved 2015 05 29 Calotypes Mhs ox ac uk Retrieved 2013 06 24 AlternativePhotography 2010 03 02 A dash of salt AlternativePhotography com Retrieved 2023 08 05 Sources editTaylor Roger Impressed by Light British Photographs from Paper Negatives 1840 1860 NY Metropolitan Museum of Art 2007 See also edit See some of the world s earliest photographs BBC News 5 August 2018 Article about an exhibition of over 100 salt prints with video of several examples External links edit nbsp Wikimedia Commons has media related to Category Salt prints How to Make a Salt Print Wayback Machine copy Salted Paper Printing Process Salt Prints William Henry Fox Talbot 1800 1877 and the Invention of Photography Luminous Lint Retrieved from https en wikipedia org w index php title Salt print amp oldid 1168917665, wikipedia, wiki, book, books, library,
