I think he means that when you go from sound speed to silent speed, the shutter angle changes in order to reduce flicker at the lower speed, by means of a little metal clip on each shutter blade that is moved in and out by centrifugal force, and that on many of the Pageants that clip sticks and so it takes a second or so for it to move. And during that second or so there is noticeable flicker.
If you run a 60 Hz Pageant at 50 Hz, it will behave differently because the motor will be running 20% slower. It will probably take less time for the clip to move. Pageants designed for 50 Hz will run at the same speeds and probably behave similarly, but I have never seen one and can't say for sure. I would suggest if the original poster wants the exact effect that they bring their own projector and run it on a a 60 Hz inverter abroad. --scott _______________________________________________ FrameWorks mailing list [email protected] https://mailman-mail5.webfaction.com/listinfo/frameworks
