In Motion Blur, instead of taking pictures from a fast-moving car, I artificially introduce motion to a still scene by moving the camera in a linear manner during a prolonged exposure. In this process, the scene plays the role of the brush and the film plays the role of the canvas. The camera motion "paints" the scene onto the film.
While most photography attempts to "stop" time with fast shutter speeds and tripods, Motion Blur instead takes a still image and introduces a velocity vector. Rather than stop time Motion Blur "stretches" it. The resulting images imply a transience of physical objects — mountain peaks vanish and trees vibrate and soar.
— Alfred Tom