On the penultimate morning of the Zee Jaipur Literature Festival, the sprawling press terrace at Diggi Palace saw an affable man walk in with a slight air of being hounded. Half of the terrace fell silent. In about two minutes Steve McCurry was in conversation with Dipsikha Thakur. McCurry is the world-famous photojournalist best-known for his 1984 photo The Afghan Girl—originally the cover short of an issue of the National Geographic magazine in 1985 and now synonymous with documentary photography. Last December Phaidon/Roli Books launched his latest book India, which takes a long look at trains and railway stations in India. Here McCurry talks about how he became fascinated with the idea of train journeys in India, his “combative” approach to being asked about the Afghan Girl and what it means to be a documentary photographer in the age of Facebook, Instagram and Photoshop.