has anyone tried to use the Canon trigger with the Sigma flashes? I know I have seen some people that have have been able to use a 580 as a master to the Sigma DGs, but never seen anyone be able to use the ST-E2 to tirgger them. I know the Sigma's are "compatible", but just how compatible is the question. I am using wren triggers now, but would like to stop using a camera flash to trigger if possible without having to use wizards.
thanks

