The Mind Bending Science Behind Motion Parallax EXPLAINED Motion parallax is a depth cue that arises because of relative motion between the observer and the objects in view. When you're moving - say, in a car or on a train - objects that are closer to you appear to move faster across your field of vision, while distant objects seem to move more slowly. This happens because nearby objects shift position across your visual field at a much steeper angle as you move, whereas the angle to faraway obj