This is a technique to use multiple Canon E-TTL wireless flashes off camera with out having a master on camera using either a sync cord or a pair of cheap RF triggers.

From start to finish it took about 2 hours to get everything setup, designed, groomed, ready to go and shot. Fortunately, I already had my lighting designed so it was a matter of quickly dialing in the power settings. The real chore was herding popcorn where it needed to be. The setup overview image below, …

For faster working with bounce flash, rotate the flash head so that you only have to bend it though one angle when changing from horizontal to vertical.