How can you capture a story in just one image, and how does narrative unfurl in a long-term photographic project? Patrick Zachmann and Matt Stuart weigh in. The difference in the practices of Magnum photographers traces right back to the agency’s founding: Henri Cartier-Bresson was the artistically inclined street photographer; Robert Capa the archetypal photojournalist; George Rodger the tireless traveller; and David ‘Chim’ Seymour concerned himself with humanitarian causes. This respectful difference of interests and opinions continues to define the diverse approaches of the current active Magnum membership. This was brought into sharp relief during a recent talk at the Barbican as part of the Magnum Photos Now series of events. In a discussion chaired by acclaimed writer Geoff Dyer, Magnum photographer Patrick Zachmann and Magnum nominee Matt Stuart deliberated their diametrically opposed positions on the use of a single image or series of images as a tool for storytelling in their work. Here, we present their reasoning for preferring each of their approaches.