George Kravis wrote:
Case in point, I use the ST-E2 controller, mounted in the 60D hot shoe, to fire as many as three Canon flashes, set on slave. They can be set off remotely with the camera's "Drive Mode" set on the 2 sec delay and triggered with the hand held RC-5.
As an alternative, instead of using the ST-E2, either the 580 or the 600 flash can be mounted in the hot and set on "Master" to trigger other canon flashes set on "Slave", also using the RC-5.
If I'm not mistaken, the 600EX-RT is backwards compatible and can also be controlled by the ST-E2 (non-RT model) or any other compatible flash that uses the infrared signal.