I'm shooting 3-perf 35mm @ 24 fps. How many feet of film do I need if I'm shooting one hour?
Is there a good site/app for calculating this?
Note: This is a repost of an off-topic/closed question I asked on Photography - Stack Exchange.
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4,051 feet of film.
60 minutes = 3600 seconds, 3600 sec x 24 fps = 86,400 frames, 86,400/21.333 = 4,050.06328
Tools for Calculating
Kodak makes a free app for iOS called "KODAK Cinema Tools" which has a film calculator, among other features.
Panavision has a simple website with a film footage, frame and running time calculator: