Collodion wet plate

A photographic process invented in 1851, involving the use of a thick glass plate on which to create a negative, exposing it in the camera with its emulsion still wet. Also called wet plate and wet collodion process. It was the standard photographic process for a time, replaced in the 1870s by the gelatin dry plate process.Examples: Nadar [Gaspard-F?lix Tournachon] (French, 1820-1910), Alexandre Dumas p?re (1802-1870), 1855, salted paper print from wet collodion negative, Cleveland Museum of Art.