The wet plate collodion process is a photographic method developed in the nineteenth century by Frederick Scott Archer. The process enables you to create ambrotypes and ferrotype (commonly referred to as tintypes) which are images on sensitized pieces of glass or iron.

Essentially, you pour a mixture of chemicals onto a cleaned glass plate and then submerge the plate into a solution of silver nitrate and water to create photo sensitive emulsion.

Once sensitized, the plate is removed from the silvernitrate solution, and exposed in a camera while still wet. Hence the name wet plate.