Collodion Photographic Process
The Collodion or Wet Plate process is a photographic process introduced in the 1850s. It required a photographic glass plate to be coated with a light sensitive emulsion and exposed and processed in a wet or moist state. The entire process of coating, exposing and processing of the plate needed to be performed in one sitting which took approximately fifteen minute to complete. This would produce a glass plate negative from which paper photographic prints could be produced.