I've always had an interest in trying some "High Speed" photography. I have Edgerton's book "Stopping Time" and, while I'm never going to be getting THAT sophisticated, I wanted to experiment a little. I understand the mechanics: Leave the Shutter open, and fire the flash to capture what you want, but understand from looking at some web sites that a normal fash unit fires too long a burst to be of use for this application. So, has anybody every tried this? How did you go about it?