Sony ILCE-7S - Manual (Page 145)

Does not release the shutter when a lens is not attached.
Note
Correct metering cannot be achieved when you use lenses that do not provide a lens
contact, such as the lens of an astronomical telescope. In such cases, adjust the
exposure manually by checking it on the recorded image.
[156] How to Use Using shooting functions Setting the other functions of this product
Silent Shooting
You can shoot images without the shutter sound.
1. MENU
→
(Custom Settings
) → [
Silent Shooting]
→ desired setting.
Menu item details
On:
You can shoot images without the shutter sound.
Off (default setting):
[ Silent Shooting] is deactivated.
Note
Use the [ Silent Shooting] function on your own responsibility, while taking sufficient
consideration to the privacy and portrait rights of the subject.
Even if [ Silent Shooting] is set to [On], it will not be completely silent.
Even if [ Silent Shooting] is set to [On], the operating sound of the aperture and focus
will sound.
When shooting still images using the [ Silent Shooting] function with low ISO
sensitivity, if you point the camera at a very bright light source, high intensity areas on the
monitor may be recorded in darker tones.
When the power is turned off, the shutter sound may beep in rare occasions. This is not a
malfunction.
Image distortion caused by the movement of the subject or the camera may occur.
If you shoot images under instantaneous lightning or flickering lights, such as the flash
light from other cameras or fluorescent lighting, a striping effect may occur on the image.
If you want to turn off the beep that sounds when the subject is in focus or the self-timer
operates, set [Audio signals] to [Off].
Even if [ Silent Shooting] is set to [On], the shutter sound may beep under the
following circumstances: