In 1987, some 400 color slides of the Lodz ghetto made by Nazi accountant Walter Genewein were discovered in a used-book store in Vienna. Combining those images with the chilling reminiscences of ghetto (and concentration-camp) survivor Arnold Mostowicz, filmmaker Dariusz Jablonski constructed The Photographer, a moving chronicle of the last Polish ghetto to be liquidated by the Nazis. The slides were shot in then-new Agfacolor—though not always to the satisfaction of Genewein, whose letters of complaint to Agfa are read in voice-over—but Jablonski filmed in black-and-white. The contrast adds an air of surreality to this document of one of human history’s least comprehensible chapters, and the pairing of old and new footage reveals that, surprisingly, many of Lodz’s infamous sites have barely changed since they were inhabited by people forced to wear yellow stars. At 8 p.m. at the Hirshhorn Museum and Sculpture Garden’s Ring Auditorium, 7th & Independence Ave. SW. Free. (202) 357-2700. (Mark Jenkins)