1) Cinematic technique 2) Industrial supply company
Found on
https://www.crosswordclues.com/clue/polyvision
Polyvision was the name given by the French film critic Émile Vuillermoz to a specialized widescreen film format devised exclusively for the filming and projection of Abel Gance`s 1927 film Napoleon. It involved the simultaneous projection of three reels of silent film arrayed in a horizontal row, making for a total aspect ratio of 4:1 (1.33×3:....
Found on
http://en.wikipedia.org/wiki/Polyvision
No exact match found.
