Freehand drawing

Frédéric Back put cels to good use in depicting the transformations wrought by the magician in Illusion?. Not only did the rough colouring technique save time but the obvious lines with loosely applied colours permitted better integration of the animated drawings with the backgrounds. In all of his films, Back drew his movements from memory without ever using a rotoscope.

Drawing from the film Illusion?.
Credit: Radio-Canada and Frédéric Back, 1975