Zecca acted in many of his films. At the end of 1906, assisted by the Spaniard Segundo de Chomón's photography and special effects, Zecca continued to experiment. He co-directed "La Vie et la passion de Jésus Christ" (1903), which, at a running time of 44 minutes, was one of the first feature-length films about Jesus. He started filming in colour, with second "Vie et Passion de N.S. Jésus Christ", shot in four parts with 38 scenes, 990 metres long, which was finished in 1907.