Michelangelo Antonioni’s Blow-Up—which opens today in a new restoration at New York’s Film Forum—is a film about images, photographs especially (a film whose obsession with film grain makes a hi-def digital restoration seem almost perverse). But if ever a film has been reduced to a single image in the public mind it is Antonioni’s mod masterpiece, whose shot of David Hemmings straddling super-model Veruschka at the climactic moment of an orgasmic photo shoot has become the movie’s money shot, endlessly parodied since. Veruschka (a.k.a. Countess Vera von Lehndorff-Steinort) appears for only five minutes at the beginning of the film but she, more than top-billed star Vanessa Redgrave, became the face, or rather the body, of Blow-Up.The shot was used for both the French grande (painted by Georges Kerfyser) and the Japanese poster, above, as well as for a wonderful series of green,...