Recognized for his playful interaction of light, Satō uses a large-format camera set for long exposures that last from one to three hours, while he dances through the described space creating points of light or illuminated lines drawn with flashlights or flashes made by reflecting mirrors. The end results with detailed photographs interrupted by patterns of light. And because of the long exposures, Satō’s movements across the scene remain undetectable by the camera. So the photograph captures his presence but not his image.