FXGuide breaks down the visual effects of Looper in a thorough but spoiler-heavy article. Says visual effects supervisor Karen Goulekas, "[Director] Rian [Johnson] came from a point of view of initially that all visual effects looked like cartoons. I said, ‘No that’s just the bad visual effects – when they’re done well you don’t even realize they’re effects’. I’m happy to say at the end of this project he no longer thought that all visual effects looked like cartoons.”
Read the full post here.