on the same level - one of the intro "computer vision" scenes to Escape from New York was performed by moving a camera over a model of a city landscape, where each of the buildings was outlined in fluorescent paint, as CG was outrageously expensive at that point in time
Similarly, TRON's CG was only wireframes, which were then cel-painted by hand, as performing that filling by computer would have been too expensive at the time.
