while digging around on the internet today, I decided to search for an acceptable wireless remote camera trigger for use with a photobooth setup.  I ran across a great (but slightly dated) article from shutterbug about the topic.  I wanted to add there have been at least a couple additions to the field since the article was written back in ’07: radio popper and pocket wizard both have new eTTL compatible systems out now for wireless flash triggering.  (Also: a few of the links at the bottom of page two don’t link correctly, but the address is right if you manually type it in the address bar).