- 35mm: 16 frames to a foot
- 16mm: 40 frames to a foot
Given the gauge (16mm/35mm), set one of the following:
- length (metres or feet)
- duration (assuming a speed of 24fps)
- number of frames
And the results for the other two parameters will be calculated.
- Other gauges:
- 8mm: 80 frames per foot
- Super-8: 72 frames per foot (71.9887)
- 9.5mm: 40 frames per foot (Read & Meyer) - same pitch as 16mm
- 28mm: 20.5 frames per foot
- 65mm: 12.8 frames per foot/ 42 frames per metre
- Other speeds: 25fps, 30fps, 16fps, etc