Description

This article is from the rec.arts.movies.tech FAQ, by Scott E. Norwood snorwood@nyx.nyx.net with numerous contributions by others.

11.1 What are the footage/time conversions for the various film formats?

   Frames per foot:
   
   16mm - 40 35mm - 16 70mm - 12.8
   
/------------------------------------------------------------------\
|   Time   |  Reg. 8mm   |  Sup. 8mm   |    16mm     |    35mm     |
|----------|-------------|-------------|-------------|-------------|
|  1 sec.  |  24 frames  |  24 frames  |  24 frames  |  24 frames  |
|          |  3.6 inches |  4 inches   |  7.2 inches |  18 inches  |
|----------|-------------|-------------|-------------|-------------|
|  10 sec. |   3 feet    |  3 1/3 feet |  6 feet     |  15 feet    |
|----------|-------------|-------------|-------------|-------------|
|  30 sec. |   9 feet    |   10 feet   |  18 feet    |  45 feet    |
|----------|-------------|-------------|-------------|-------------|
|  1 min.  |   18 feet   |   20 feet   |  36 feet    |  90 feet    |
|----------|-------------|-------------|-------------|-------------|
|  3 min.  |   54 feet   |   60 feet   |  108 feet   |  270 feet   |
|----------|-------------|-------------|-------------|-------------|
|  5 min.  |   90 feet   |   100 feet  |  180 feet   |  450 feet   |
|----------|-------------|-------------|-------------|-------------|
|  10 min. |   180 feet  |   200 feet  |  360 feet   |  900 feet   |
|----------|-------------|-------------|-------------|-------------|
|  20 min. |   360 feet  |   400 feet  |  720 feet   |  1800 feet  |
|----------|-------------|-------------|-------------|-------------|
|  30 min. |   540 feet  |   600 feet  |  1080 feet  |  2700 feet  |
\------------------------------------------------------------------/

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• next: 11.2 What are the lens focal length/image size conversions for the various filmformats?