Be careful with which flashes you use. If the flash in use is one that has high trigger voltages, the flash could fry the camera's electronic triggering circuit. Been there!
Bob Rapp On the voltage trigger thread a couple of weeks ago there was a link to a site that listed trigger voltages. The 622 super triggers at 6V, so I should be safe. Where it also has the capability of TTL they probably figured the low voltage in. Butch

