I was standing with a group of street photographers at a bus stop in Istanbul when an old man sauntered up to us to ask for directions. “That’s Josef Koudelka,” said one of our group and we collectively froze the moment we turned to look. There he was, the photographer in exile, Magnum member since ’71, author of Gypsies, Exiles and more. He looked as though he had just gotten back from an expedition, the pockets of his vest stuffed with papers and his one-of-a-kind Leica S2 hanging off his shoulder. For all of us standing there, he’s an icon, and for 30 minutes, we helped him find his way. Koudelka was in Istanbul for a presentation at FotoIstanbul, an annual photo festival, and he was due to present new work – a series of 145 black-and-white panoramas of Greek and Roman ruins in Turkey.