Among Kubrick's innovations in cinematography are his use of special effects, as in "2001", where he used both slit-scan photography and front-screen projection, which won Kubrick his only Oscar for special effects. Some reviewers have described and illustrated with video clips, Kubrick's use of "one-point perspective", which leads the viewer's eye towards a central vanishing point. The technique relies on creating a complex visual symmetry using parallel lines in a scene which all converge on that single point, leading away from the viewer. Combined with camera motion it could produce an effect that one writer describes as "hypnotic and thrilling". "The Shining" was among the first half-dozen features to use the then-revolutionary Steadicam (after the 1976 films "Bound for Glory", "Marathon Man" and "Rocky"). Kubrick used it to its fullest potential, which gave the audience smooth, stabilized, motion-tracking by the camera. Kubrick described Steadicam as being like a "magic carpet", allowing "fast, flowing, camera movements" in the maze in "The Shining" which otherwise would have been impossible.