The dominant color in Orhan Pamuk’s new book of photographs is orange. When the Nobel-Prize-winning novelist is finished with a day’s writing, he takes his camera and wanders through Istanbul’s various neighborhoods. He often explores the backstreets of his hometown, areas without tourists, spaces that seem neglected and forgotten, washed in a particular light. This is the orange light of the windows and streetlamps that Pamuk knows so well from his childhood in Istanbul 50 years ago, as he tells in his introduction. Yet Pamuk also observes how the homely, cozy orange light is slowly being replaced by a new, bright and icy-white light from