I know this may sound weird but only the first 15 minutes of the movie and a few other small scenes were CGI. Most of the movie used old school film effects and

I know this may sound weird but only the first 15 minutes of the movie and a few other small scenes were CGI. Most of the movie used old school film effects and hand-drawn cell animation. But the CGI in Tron was mind blowingly advanced for the era including the first CGI facial animation.