Choose the shutter type. Choose the electronic shutter to mute the shutter sound.
If an option other than [MECHANICAL SHUTTER] is selected, shutter speeds faster than 1/4000 s can be chosen by rotating the shutter speed dial to  and then rotating the rear command dial.
When the electronic shutter is used, the flash is disabled, shutter speed and sensitivity are restricted to values of 1/32000–30 s and ISO 12800–200 respectively, and long exposure noise reduction has no effect. In burst mode, focus and exposure are fixed at the values for the first shot in each burst.
Distortion may be visible in shots of moving subjects with electronic shutter, while banding and fog may occur in shots taken under fluorescent lights or other flickering or erratic illumination. When taking pictures with the shutter muted, respect your subjects’ image rights and right to privacy.