Difference between revisions of "Wet-collodion"
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'''Wet-Collodion''' is a negative-positive [[:Category:Photographic processes|photographic process]] using potassium iodide dissolved with gun-cotton in ether. The solution is spread onto glass plates, where the ether evaporates. Before the ether completely evaporates, the plates sensitized in a bath of silver nitrate solution. Plates had to be exposed whilst still wet, so the plate preparation had to be done immediately before use; this meant that outside the studio, photographers would carry a small tent with a supply of plates, sensitization bath and bottles of the solutions. | '''Wet-Collodion''' is a negative-positive [[:Category:Photographic processes|photographic process]] using potassium iodide dissolved with gun-cotton in ether. The solution is spread onto glass plates, where the ether evaporates. Before the ether completely evaporates, the plates sensitized in a bath of silver nitrate solution. Plates had to be exposed whilst still wet, so the plate preparation had to be done immediately before use; this meant that outside the studio, photographers would carry a small tent with a supply of plates, sensitization bath and bottles of the solutions. | ||
| − | The process was invented in 1851 by [[Frederick Scott Archer]]. | + | The process was invented in 1850, and published in 1851 by [[Frederick Scott Archer]], although a Frenchman, Gustave Le Gray may have discovered the process at around the same time. |
[[Category: Photographic processes]] | [[Category: Photographic processes]] | ||
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| + | * http://en.wikipedia.org/wiki/Collodion_process | ||
Revision as of 15:30, 11 August 2008
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Wet-Collodion is a negative-positive photographic process using potassium iodide dissolved with gun-cotton in ether. The solution is spread onto glass plates, where the ether evaporates. Before the ether completely evaporates, the plates sensitized in a bath of silver nitrate solution. Plates had to be exposed whilst still wet, so the plate preparation had to be done immediately before use; this meant that outside the studio, photographers would carry a small tent with a supply of plates, sensitization bath and bottles of the solutions.
The process was invented in 1850, and published in 1851 by Frederick Scott Archer, although a Frenchman, Gustave Le Gray may have discovered the process at around the same time.
