Estimated running time of a D8 spool with 2x10m (2x33ft) film at the most typical frame rates:
18 frames per second ≈ 4min 53s (2min 26s / side)
24 frames per second ≈ 3min 18s (1min 50s / side)
(Calculated running times, may vary by camera model)
NOTE: The film is developed as a negative so it is not directly viewable on a projector because its colors are inverted (hence the negative).
After development the negative film can be scanned into a digital format in which the colors are turned to normal.