who invented the wet collodion process
Frederick Scott Archer's wet collodion process, announced in 1851, became the standard photographic negative process for both amateurs and professionals from the mid-1850s until the early 1880s.
The collodion process is an early photographic process, invented by Frederick Scott Archer. It was introduced in the 1850s and by the end of that decade it had almost entirely replaced the first practical photographic process, the daguerreotype.