In L’operatore perforato (1979) that plump sprocket hole comes into its own. It multiplies like a virus, riding serenely on the surface, nearly obliterating the images trembling underneath it. Near the close of the film, we watch another cameraman, perhaps shooting a Fatty Arbuckle imitator, cope with the invasion of perforations, not only from the top and center but from the edge. By now, when we can hardly tell the difference between frame and perforations, cinema’s two round-cornered rectangles, the image can be anything—a picture, or a zone of blank white.

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