 To film the special effects, Disney originally wanted to rent the  Dykstraflex camera system (the first computer controlled camera)  from Industrial Light & Magic. However, the price and rental terms  were unacceptable so Disney went to their acclaimed engineering  division to come up with their own version. What resulted was  Disneys A.C.E.S. (Automated Camera Effects System), which was  radically superior to the Dykstraflex system, the "Mattescan"  system, which enabled the camera to move on a matte painting (which  was previously impossible), and a computer