I can only sympathize, not provide information. I haven't used the 500DG, just an early model of the 500 Super with EOS film cameras. My final move was to throw the Sigma flash unit in the trash. It was a piece of junk, didn't even fire as a slave half the time.
My motto: stick with Canon and Metz shoe flash units. --QS * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
