 Rendered for an aspect ratio of 1.66:1, and it was supposed to be  matted in theatres to 1.85:1 (the aspect ratio for which the team  tried to compose). For reasons too complex to go into here, they  aimed for 1.85:1 and missed, but only by a little. After careful  consideration and consultation with director John Lasseter (qv),  they nudged the window open a tiny bit to 1.78:1.