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Stop motion animation makes many effects possible that regular filming doesn’t. For example in a stop motion production a person can appear to move accross the ground while lying on their stomach or while sitting. Many powerful effects can be achieved through this type of animation, but

The hollow face illusion is a powerful visual effect that makes a stationary object appear to move. In this example the object is a piece of paper that has a dragon’s image on it, the dragon’s head appears to follow you accross the room. I came accross