 Despite the budget escalating to over $50 million, Disney moved forward on production because they were enthusiastic to work with Spielberg.VistaVision cameras installed with motion-control technology were used for the photography of the live-action scenes which would be composited with animation.Rubber mannequins of Roger Rabbit, Baby Herman, and the Toon Patrol would portray the animated characters during rehearsals to teach the actors where to look when acting with "open air and imaginative cartoon characters".