In May 1947, the legendary photographic co-operative Magnum Photos was set up by a group of famous photographers, including Robert Capa and Henri Cartier-Bresson whose work would inspire generations of photographers. Members of Magnum would go on to produce many of the most iconic images of the 20th and 21st centuries. Louise Hidalgo talks to Jinx Rodger, widow of one of the founders, George Rodger, and to Inge Bondi, who knew them all.Photograph: US troops’ first assault on Omaha Beach during the D-Day landings, Normandy, France. June 6, 1944. (Credit: International Center of Photography/Magnum Photos. With thanks to Magnum Photos)