Sony ILCE-6500 Manual page 348

Movie Mode Only:
Starts movie recording when you press the MOVIE button only if the shooting mode is set to
[Movie/S&Q Motion] mode.
[373] List of MENU items
Dial / Wheel Lock
You can set whether the dial and wheel will be locked by pressing and holding the Fn (Function)
button.
MENU →
1
Menu item details
Lock:
Locks the control dial and control wheel.
Unlock:
Does not lock the control dial or control wheel even if you press and hold the Fn (Function)
button.
Hint
You can release the lock by holding the Fn (Function) button down again.
[374] List of MENU items
Audio signals
Selects whether the product produces a sound or not.
MENU →
1
Menu item details
On:
Sounds are produced for example when the focus is achieved by pressing the shutter button
halfway down.
Off:
Camera Settings2
(Camera Settings2) → [Dial / Wheel Lock] → desired setting.
Camera Settings2
(Camera Settings2) → [Audio signals] → desired setting.