I'm running out the door right now. Gotta get to set, but...
Let's choose one film. The Good the Bad and the Ugly... since it's the most popular.
Shot in Techniscope, which is a 2-perf vertical 35mm format. They probably used an arriflex 35IIc [FONT=Verdana, Arial, Helvetica, sans-serif][SIZE=-1][/SIZE][/FONT]coverted for Techniscope and would have been an arri bayonet mount. The lenses would probably been arri's.