I have a Nikon SB-600 flash and it obviously works with Nikon cameras. I also have a Contax 645 medium format camera but I don't have a Contax flash. What's more, the Contax flashes are expensive and it wouldn't be worth buying one for the few times I need flash for medium format. How can I check to see if a flash and camera from different cameras are compatible? The SB-600 has no place for cables so it could only be used in the hot shoe.