Elliott Erwitt photographed Marilyn Monroe a number of times over her career and was well aware of her rocky temperament. But it wasn’t his way to “smarm up” to celebrities, treating them the same as he would any other subject. Though he has taken some of the most iconic images of the last half century, Erwitt is always matter-of-fact about his process: “You just walk around and look at things and try to put them in the frame. And hope that you will have got something.”