I have two Einsteins and a 580EX speedlight... I wanted to know if I could use a cheap Yongnuo RF-603 C3 radio trigger/transmitter to trigger my 580 EX and have my CST trigger in the hotshoe on the Yongnuo to trigger my Einsteins...
If this works, I can use one Einstein as a Key Light, the second to light the background, and the 580EX as a hair or rim light...
If not I guess I could just plug the PC port cable into the CST...

