Check this out. The guy is using a Better Beamer but, he's able to use his flash continuously in sync with the camera. Do you know what he's using to get such a fast refresh rate?
Go to 5:19-5:20.http://www.youtube.com …qzas2SrGE&feature=related
His intro is WAY over the top. Yeah, I see what you're talking about--he fires off several series of ultra-fast bursts around the 9 min mark. Is that speed even possible on the 580ex?
I'm seeing lots of vids of birding photogs using the better beamers. Maybe I'll have to pick one up for myself and see how the light affects the subject.

Anyways, I think he's using a CP-E4.
For what it's worth, I'm freezing here in shorts. With the ceiling fan going. And the windows open.


