Three-screen film. Three projectors with lamps of equal wattage are required, having lenses of 2" for normal projection: approx. 50 feet projector-to-screen. Place projectors side-by-side; screen images should be same-sized, separate but touching. Center reel is mixed color/B&W and carries the soundtrack. The two side reels are B&W, silent, and are to be run at 24 fps with sound turned off. Begin with center projector, sound turned on, and run alone until the title "Parallax" is finished: then switch on two side projectors simultaneously.