Pentax K-X Operating Manual page 26

You can turn the camera operation beep o noroff.
There a re fiveitems t hat y ou can set: I n-focus, AE-L ( AE lock operation
sound), RAW (operation sound w hen [ RAW Button F unction] isassigned
tothe_)button), Self-timer and Remote Control.
The default setting i sall_ (On).
1
2
Select [Beep] in the [_ Set-up 1] menu and press the four-
way controller (•).
The [Beep] screen appears.
Use the four-way controller
(A T) to select an item and use
the four-way controller ( < • ) to
select _ or D.
You can turn all the beeps off byselecting
for [Setting].
In-focus
AE-L ,__
RAW
Self-timer
Remote Control
J Press the
MENU
button twice.
The screen that was displayed before selecting the menu appears again.