Recently I purchased a remote IR camera triggering system called the PhotoTrap. Made by Bill Forbes of Arizona, USA, the PhotoTrap is a very flexible system and very easy to set up in the field. The system comes with everything you need to get running, as long as you have a flash unit or two. Anyway, I got my first real chance to test it out last night, when a break in the annual “rainy season” finally occurred.
As this was my first effort, and the fact that I was going after medium-sized, slow moving mammals, I set up the PhotoTrap in the traditional “break beam” mode, whereby the emitter and detector are set up facing each other over a distance of a metre or so. I then set up the flash units, did a couple of test firings, and finally laid some bait in the centre of the area covered by the IR beam. I then left the gear unattended for about 3 hours.
When I returned I found that a Japanese Wild Boar had approached the site shortly after “complete darkness” and had promptly knocked over (or tried to eat!) the emitter! Unfortunately, the trap only got off one shot before the boar knocked the emitter out of alignment, so that was the end of the evening’s experiment.
One lesson learned was that I need to calculate the manual flash power output more carefully. Also, the 430EX II always goes into “SE” or “Save Energy” mode after about an hour, which means it won’t fire on the first shot thereafter. It needs to be “woken up” first then allowed to charge… The 580EX has no such issues.
Anyway, I am encouraged by the evening’s result and will try again either tonight or tomorrow night. This time I will use the PhotoTrap in the “reflect without reflector” mode….I may also revert to Av mode and ETTL.
Below are two shots from last night; one of myself setting off the trap and the other of the boar.

Myself setting off the PhotoTrap

Japanese Wild Boar destroying PhotoTrap Setup!