I saw on the Super 8 Database a film titled 'Projecting the Right Image'. I remember someone once posting a link to this, so I looked it out again on Youtube. It's all about the right way to project a 16mm film. They tell you to wait until the countdown leader has passed before turning on the lamp (a bit difficult to see in the dark). Personally, I always like to watch the countdown, I know i'm watching a real film. Am I the only one?