I must say, this particular optical slave has been fantastic! I've never tried it outdoors, but in studio it has not failed me yet.
The optical slave has a simple hotshoe mount, so it is not necessary that the flash have a built in PC outlet. This optical slave also has a PC socket on the side so you can link it to aother flash and trigger two flashes with it (or you could just get another optical slave).
Great. Thanks for the info. If you do try the optical outside please update us.


