Cartier-Bresson (1908-2004) is one of the most accomplished and original figures in the history of photography. His work in the 1930s aided defining the creative potential of modern photography. His ability to capture life "on the run",MoMa)
or candidly, was known as "the decisive moment", also the title of his first major book. He and others founded the Magnum photo agency, which enabled photojournalists to work with magazines such as Life while retaining control over their work. Cartier-Bresson produced large series of reportage of unrest in China, the Soviet Union, the United States, Europe, India, and Indonesia. His photos often depicted people, and was considered one of the greatest portraitists of the twentieths century. (Source:

This is an example of the candid portraiture that Cartier-Bresson was known for.