Special effects The effects expert Eugen Schüfftan created pioneering visual effects for Metropolis. Among the effects used are miniatures of the city, a camera on a swing, and most notably, the Schüfftan process, in which mirrors are used to create the illusion that actors are occupying miniature sets. This new technique was seen again just two years later in Alfred Hitchcock's film Blackmail (1929).
Special effects T,he effects expert Eugen Schüfftan created pioneering visual effects for Metropolis. .Among the effects used are miniatures of the city a camera on a swing, and most ,notably, the Schüfftan process in which mirrors are used to create the illusion that actors are occupying miniature sets. This new technique was seen again just two years later in Alfred Hitchcock's film Blackmail (1929)