Select On to reduce vibrations caused by the shutter when shooting landscapes and other static subjects (0 Silent Photography). Use of a tripod is recommended. The flash and long exposure noise reduction are disabled, as are the electronic front-curtain shutter and beep speaker, regardless of the options selected for Custom Setting d5 (Electronic front-curtain shutter) and for Beep options in the setup menu. In continuous release modes, the frame advance rate will change (0 Frame Advance Rate).