John Knoll’s Celebration IV session focused on visual effects, digital compositing and the evolution of ILM’s methods from the original trilogy legacy into modern filmmaking. Knoll, a key effects supervisor on the prequel trilogy and a major figure in digital visual effects, could speak to the transition from optical and miniature-heavy work to computer-assisted production. The panel likely covered specific Star Wars effects challenges, how shots were planned and completed and how ILM balanced practical history with digital tools.