Segment from Film Photography Podcast Episode 28 – February 15, 2011
“Sprocket hole photography is a style of photography that exposes the full width of 35 mm film, creating a photograph punctuated by the “sprocket holes” (perforations) along the edges of the film. It is part of the lo-fi photography movement. Usually, this style involves the use of a modified medium format camera, since a 35 mm camera ordinarily will not expose the edges of the film.”
From: en.wikipedia.org/wiki/Sprocket_hole_photography
Sprocket Hole adapters (35mm to 120, 620 and other formats) can be purchased from Sprocket Hole Revolution.
FPP Listener Rob says — Follow these instructions to do it yourself.