DESC: The FM3A offers aperture-priority autoexposure and through-the-lens flash exposure control. Film speed can be set via the DX codes on the film canisters. That's pretty much it for automation. Controls are a very traditional "two-dial" classic manual camera setup. You turn the lens aperture ring (Dial 1) to adjust aperture. You turn the shutter speed dial (Dial 2) on the top deck to adjust shutter speed. You turn the lens focus ring to focus (this doesn't rate a dial number in the autofocus world).