Collodion process

An old deteriorated dry plate featuring Theodore Roosevelt is similar to a wet plate image but has substantial differences.

The collodion process is an early photographic process, said to have been invented, almost simultaneously, by Frederick Scott Archer and Gustave Le Gray in about 1851. During the subsequent decades of its popularity, many photographers and experimenters refined or varied the process. By the end of the 1850s it had almost entirely replaced the first practical photographic process, the daguerreotype.

单词	Wet collodion plate
释义	Wet collodion plate 英语百科 Collodion process The collodion process is an early photographic process, said to have been invented, almost simultaneously, by Frederick Scott Archer and Gustave Le Gray in about 1851. During the subsequent decades of its popularity, many photographers and experimenters refined or varied the process. By the end of the 1850s it had almost entirely replaced the first practical photographic process, the daguerreotype.
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Wet collodion plate

Collodion process