Super 8mm Film for comparison. Note
that the perforation hole size has been reduced to improve qualityof
the image by increasing the picture area of each frame.
Super
8mm Film with magnetic sound. The wide stripe, shown at left, carries
the recorded soundtrack. The very narrow 'Balancing Stripe' is applied
next to the perforation holes. This balance stripe was simply to keep
the film wound evenly on the reels. The thickness of an unbalanced
stripe would otherwise have a cumulative detrimental effect over many
turns of film on the reel.
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Here is an example of Standard 8mm Kodachrome Film. Note the small frames of picture between each perforation hole.