Roman Polanski has, over the course of a half century, become recognized as one of the great modern masters of the cinema. Many of his films are infused with a mysterious, difficult-to-define sense of dread, which is understandable given much of his early life experience. Polanski’s parents were sent to a concentration camp, where his mother died, and he lived as a fugitive Jewish teenager in Nazi-occupied Poland. His 1984 autobiography begins, “For as far back as I can remember, the line between fantasy and reality has been hopelessly blurred,” and his films use the fantastical elements of cinema to make sense of the extraordinary reality he has experienced. Roman Polanski, a film retrospective at the NY MoMA, will run from September 7 to September 30.