Henri Cartier-Bresson (French: [kaʁtje bʁɛsɔ̃]; 22 August 1908 – 3 August 2004) was a French artist and humanist photographer considered a master of candid photography, and an early user of 35mm film. He pioneered the genre of street photography, and viewed photography as capturing a decisive moment.
Cartier-Bresson was one of the founding members of Magnum Photos in 1947. In the 1970s, he largely discontinued his photographic work, instead opting to paint.
Source : Wikipedia
