I also use a Metz hammerhead with my C330, which seems like the easiest solution. I also (in preference) use a Mamiya trigger grip with an inbuilt cold shoe, to which I attach a Cobra flash unit. The Cobra unit was fairly cheap, but has a pc cord with it. Despite its cheapness, it gives reasonably good results. The Vivitar unit mentioned above would also be a good candidate. Just make sure the selector switch on the lens is set to X. Regards, BLIGHTY.