I have recently bought the Fuji Gw690 III and Metz flash 45CT5 system. I have heard that because of voltage issue that can damage cameras, it is advisable not to connect the Metz flash directly to the camera, digital or film. What set-up do use with your Metz flash? is the voltage issue true for these type of flashes? if it is what step or device can be used to prevent damage to camera?