QUOTE (GuyinSG @ Oct 4 2008, 12:08 PM)

HI all,
Just joined this forum. I know that Novoflex makes a quality adapter for Hassy lenses to fit a Contax 645. My question is with a Phase One back can I really use the leaf shutter of the Hassy lens to get a faster strobe sync speed? Will the Phase One back, the camera body and the Hassy lens all communicate to make higher sync speeds a reality?
No.
the adapters do not do anything other than mount the lens on the body. You can't stop down unless it's on manual and there is no mechanism to recock the leaf shutter in the lens.
Just about the only reason to go to Hasselblad,pentax, or keiv or other lenses for the Contax is for a different look, i.e. a hasselblad f series 110 f2, or some russian glass for smoothness or to tilt shift, but all of those have to be stopped down.
JR