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Blowup offers a glimpse of England circa 1966, a time when London swung like a pendulum: hip-huggers, miniskirts with brightly colored tights, and the Yardbirds in a Who-like performance in which Jeff Beck smashes his guitar. In other words, it contains just about everything the Austin Powers movies spoof, including a David Bailey-esque fashion photographer. While sleepwalking through his jaded existence, photog Thomas (David Hemmings) takes some shots of a couple in the park. Jane (Vanessa Redgrave) spots him too late and decides she’ll do anything to get those pictures back. When Brian De Palma copied Blowup in his Blow Out (one of the few times he stole from someone other than Hitchcock), it became just another mystery. But in the hands of Michelangelo Antonioni, it is a compelling absurdist parable in which nothing is resolved. With Charles and Ray Eames’ short SX-70 at 7 p.m. at the Library of Congress’ Pickford Theater, 1st & Independence Ave. SE. Free. For reservations call (202) 707-5677. (MWS)