3D movie printed on paper. Fragment of a 10 second experimental movie made by René Bünzli. Viewable by only one person at a time through a special viewer.

Note the moving mirror at top center of the patent drawing in image 4. The film advances continuously while the mirror rotates to follow the frame, thus maintaining a still virtual image (a process called image stabilization by Lipton, p. 168). As the cam (marked "e" in the drawing) turns, a pin on the cam travels up and down a slot in a lever attached to the axis of the mirror, rocking it back and forth. The use of a moving mirror for image stabilization appears in several devices with different mechanisms for turning the mirror, beginning with the praxinoscope and including the parlor kinetoscope.