Having the use of a 3 camera rig, allowed him to gain that panoramic style. But it had been found that showing the film in the style intended became a little problematic .
Difficulties in mounting a full screening of Napoleon with three simultaneous projectors mean that a true Polyvision presentation is rarely seen, and the last documented screening of Polyvision were the December 2004 Royal Festival Hall and December 2009 Cité de la Musique screenings of Napoleon.
[Ref: Polyvision, Posted upon Wikipedia, 2010]
[Ref: 3 Camera Rig, Used by Abel Gance, 1927]
[Ref: Napoléon, Directed by Abel Gance, 1927]
Even though this information gave me a brief insight in to what I could achieve, that I could in fact achieve a panoramic view with the use of triptych presentation, I still found myself more intrigued with having three different yet related pieces of footage played side by side with the occasional interaction.