TRON

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• The DVD commentary notes that there is almost no camera movement whatsoever in any of the shots of the electronic world with live-action characters in them. They brought in a camera and tripod with metal batwings attached, and literally nailed the camera to the floor; the camera was so locked off that "it wouldn't move even if hit by a car". The few shots with live-action characters which actually have camera movement (about a dozen shots in all) involve simple graphics or animation, such as one-color backlighting.
• The computer character that helps Tron connect to his user is named for Allen B. DuMont, inventor of the first monitor in the year 1920.
• At the time, computers could generate static images, but could not automatically put them into motion. Thus, the coordinates for each image, such as a lightcycle, had to be entered for each individual frame. It took 600 coordinates to get 4 seconds of film. Each of these coordinates was entered into the computer by hand by the filmmakers.
• The original plan was to have the circuit lines of the "good" programs glow yellow, and the "bad" programs would have blue circuit lines. At one point this was changed to where good programs are blue, and evil ones are red. Some of the original coloring remains, mostly in tank programs (Clu has yellow lines on his uniform, and all of Sark's tank commanders are pale green).But Flynn takes on this greenish tint after he crashes the reconizer and gets knocked out, shortly after he gets up he returns to the normal blue.