Found an old film camera in the basement and decided to learn how to use. I purchased 24 film. However, when I took the 24th shot, the camera ticked over to 25. I took another shot and the camera finally said "End". But the shutter did open. Did I take 25 pics on 24 film or did I just double expose the 24th shot? Sorry if this question sounds silly. I really don't know.