35mm film is 35mm wide and the image is only 24mm high. Therefore there is 11mm where those sprocket holes go. I realize how we inherited 35mm film from the movie biz and why the movie cameras need the sproket holes. I want to know where all those little punch outs (chad?) go from the film. Do they get used? Fed to livestock? Recycled? Sold as microdots to James Bond? There must be an ocean of those little suckers somewhere.