
Richard Leach Maddox
Richard Maddox was an English photographer and physician who invented lightweight gelatin negative plates for photography in 1871. Dry plate is a glass plate coated with a gelatin emulsion of silver bromide. It can be stored until exposure, and after exposure it can be brought back to a darkroom...

Peter Mawdsley
Peter Mawdsley invented the first photographic paper, the silver gelatin print, in 1873. It was the first photographic process that submerged exposed paper into chemicals, rather than using light, as the chief agent in developing an image. Due to its stability and ease of use, developing-out...