There are four standart 8mm film roll types (3, 5, 6 and 7 inches). For quick estimation of film tape length, the best way is to check it's diameter. As many centimeters of film tape you have, so many minutes of the material there is (it's very inexact but you can easily check the approximate film lenght).
TYP A - 3 inches, 50 feet, 15 meters, roll diameter 7.5 centimeters, about 4 minutes of material
TYP B - 5 inches, 200 feet, 60 meters, roll diameter 12.7 centimeters, about 13 minutes of material
TYP C - 6 inches, 300 feet, 90 meters, roll diameter 15.5 centimeters, about 20 minutes of material
TYP A - 7 inches, 400 feet, 120 meters, roll diameter 17.5 centimeters, about 25 minutes of material
1 meter 8mm film - 264 frames
Film type | Regular 8mm | Super 8mm | Super 8mm |
Length |
Speed 16.67 frames per second |
Speed 18 frames per second |
Speed 24 frames per second |
50 feet, 3 inches diam. (15 meters) |
4 minutes | 3.5 minutes | 2.5 minutes |
200 feet, 5 inches diam. (60 meters) |
15 minutes | 13 minutes | 10 minutes |
300 feet, 6 inches diam. (90 meters) |
22 minutes | 20 minutes | 15 minutes |
400 feet, 7 inches diam. (120 meters) |
30 minutes | 26 minutes | 20 minutes |
600 feet, 9 inches diam. (180 meters) |
44 minutes | 40 minutes | 30 minutes |
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