And Magnum, founded in 1947, by Capa, Henri Cartier-Bresson, George Rodger and David Seymour, has had its own dramatic history.

Its annual general meetings were famous for drinking, fights and tantrums, with warring factions at its London, Paris and New York bureaus battling for supremacy.

Because it was a co-operative owned by the photographers it was also dogged with financial problems but despite that has produced some of the greatest war and art photos, from Capa�s controversial Spanish Civil War photograph �Loyalist Militiaman at the Moment of Death� to Eve Arnold�s portraits of leading figures of her day such as Malcolm X.