Désiré van Monckhoven
Désiré Charles Emanuel van Monckhoven (1834–1882) was a Belgian chemist, physicist, and photographic researcher. He was also an inventor and author. Works. He wrote several of the earliest books on photography and photographic optics. His original French works were later translated to English and other languages. He invented or developed an enlarger (1864), a dry collodion process (1871), improvements of the carbon print process (1875–80), and improved silver-bromide gelatine emulsions.