2-perf, 3-perf, 4

[Joshua Jackson]

In studying about 35mm film, I've seen people mention different perfs for it. COuld anyone explain why this is so and the importance of understanding it?

[Nathan Milford]

Joshua,

 

There is a wonderful Wikipedia article on the subject here.

 

- nathan

[daria gupalo]

and here is a yet another one on Arri web site ;) i like this one better somehow...

 

http://www.arri.de/infodown/cam/broch/3per...tion-public.pdf