collodion process

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In photography, a method of achieving light-sensitive surfaces which remain in place on their supports. The process was successfully pioneered by Frederick Scott Archer in 1851 using a mixture of nitrocellulose dissolved in ethyl ether and ethyl alcohol called collodion (based on the Greek word for glue) as a vehicle for coating potassium iodide on glass. In the 20th century collodion plates were used in photomechanical reproduction for line and half-tone blockmaking.

http://www.getty.edu/art/gettyguide/videoDetails?segid=1726 Video of the collodion process on J. Paul Getty Museum website.

Subjects: Art.

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