A correspondent off this list posed a question that the more technologically-inclined here might be able to answer: exactly (or approximately) how much time of each 1/24th of a second during normal sound projection is "dark"? In other words, if the frame is advanced, halted, and double-flashed by the shutter to minimize flicker, during what percentage of that time is the image actually not being projected through the lens? Any answers would be appreciated. Don Larsson ----------------------------------------------------------- "Only connect" --E.M. Forster Donald F. Larsson Department of English, AH 230 Minnesota State U, Mankato (56001) [log in to unmask] ---- For past messages, visit the Screen-L Archives: http://bama.ua.edu/archives/screen-l.html