Watch: How to Create a Forced Perspective
Distance from Camera x Scale of Model=Distance between Foregrounded Model and Background. That simple bit of arithmetic, as illustrated in the latest Shanks FX episode, is all you need to achieve an accurate “forced perspective.” The technique, recognizable from Back to the Future and myriad 80’s blockbusters, allows for the manipulation of objects to appear larger/smaller or farther/closer than they actually are. In other words, it’s VFX done on the (relative) cheap.