Complex sentence: Fincher employed the digital Thomson Viper Filmstream camera to photograph the film, however "Zodiac" was not shot entirely digitally; traditional high-speed film cameras were used for slow-motion murder sequences.
Split into simpler sentences: Fincher employed the digital Thomson Viper Filmstream camera to photograph the film. However "Zodiac" was not shot entirely digitally; traditional high-speed film cameras were used for slow-motion murder sequences.