Work on the film began in March 1997. It took Aleksandr Petrov and his son Dmitri Petrov (who helped his father) until April 1999 to paint each of the 29,000+ frames. The film's technique, pastel oil paintings on glass, is mastered by only a handful of animators in the world. Petrov used his fingertips in addition to various paintbrushes to paint on different glass sheets positioned on multiple levels, each covered with slow-drying oil paints. After photographing each frame painted on the glass sheets, which was four times larger than the usual A4-sized canvas, he had to slightly modify the painting for the next frame and so on. For the shooting of the frames a special adapted motion-control camera system was built, probably the most precise computerized animation stand ever made. On this an IMAX camera was mounted, and a video-assist camera was then attached to the IMAX camera.