Stop-motion with live camera movement during shooting — creates natural motion blur instead of stiff animation. ILM perfected it in the '80s.
Go Motion differs from classic Stop Motion in that the camera is moved during the capture of each individual frame—not just the puppet. As you push the character into its next position, you simultaneously move the camera: a millimeter to the left, exposed for a tenth of a second longer. The result appears smoother, less "jerky," because the motion blur is more natural. In classic Stop Motion with a static camera, sharp transitions occur between frames—the eyes perceive this as staccato. Go Motion captures the reality of continuous light while still working frame by frame.
Industrial Light & Magic systematized the technique in the early 80s—Phil Tippett and his team needed a solution for motion-intensive scenes in The Empire Strikes Back. Camera movement must be precisely computer-controlled, otherwise the image will shake or the motion blur will become chaotic. Modern Go Motion uses motion control cameras that follow digital spline curves: you program the entire move, and the camera repeats it with pixel-perfect accuracy while the puppet is successively repositioned. This requires extremely stable rigs—any vibration, any draft sabotages the illusion.
In practice, Go Motion is more labor-intensive and technically demanding than pure Stop Motion. You need motion control equipment, precise timing coordination between camera and animator, and thorough pre-production—every second is worth hours of setup time. In return, you gain a kinetic elegance that pure Stop Motion struggles to achieve. The technique is used less frequently today, since digital skeletal animation and motion capture have become dominant, but for certain handcrafted, tactile effects—organic creature work, miniature destruction—Go Motion remains unrivaled in its authenticity.
The key is that you don't work against the camera, but dance with it. Stop Motion is a visual staccato; Go Motion is a continuous flow technically assembled from discrete frames—an illusion the eye accepts before the brain realizes it's being deceived.