Hello everybody, This is my first quest for advice here. I very much appreciate the help in advanced, so thank you. I am shooting an ISO 800 film and my camera is set to ISO 800, but my flash ISO only goes as far as 400. On my (external) light meter should I meter with the camera ISO or flash ISO? Will two differing ISO's cause any problems? I am using a Minolta XD7 camera with a Minolta 320x flash unit. I understand this might be a silly question!