Dr Richard L Maddox
Richard Leach Maddox (4 August 1816 – 11 May 1902) was an English photographer and physician who invented lightweight gelatin negative plates for photography in 1871.
Dry plate, also known as gelatin process, is an improved type of photographic plate. It was invented by Dr. Richard L. Maddox in 1871, and by 1879 it was so well introduced that the first dry plate factory had been established. With much of the complex chemistry work centralized into a factory, the new process simplified the work of photographers, allowing them to expand their business.
Visual Examples of gelatine plate photography
Process of using gelatine plate photography
Emulating this process diditally
Examples of borders in photoshop