Its the flash that captures the action. We basically had a sound trigger
to set off a couple of flashes. You open the shutter, fire the gun and with
a bit of adjustment on the trigger delay, sensitivity, distance of the gun
etc, you capture it. All done in very low light ambient light btw..
The Exif data isnt much help in this situation..
Hope that made a bit of sense
Thanks Rob, I would say it worked extremely well,We used two flashes, one at the front and one at back of the object just
out of shot, seemed to work quite well..
I'm just completing my air gap flash at the moment