Pentax K-R Operating Manual page 70

You can setthe camera toturn offautomatically ifunused after a certain
length o ftime. Select from [1min.] (default setting), [3min.], [5min.],
[10 min.], [30 min.] or[Off].
Set i n[Auto P ower Off] o fthe ["KSet-up 3]
1234
menu ( p.267). m
' The A uto P ower Off function does not work inthe following situations.
_When the Live v iew image isdisplayed
! When the s!ideshow isplayed back
- when the camera isconnected toacomputer with a n USB c able
, !fthe c amera turns off a fter the s et l ength oftime, perform one o f t h efollowing
operations toreactivate it,
Turn o n th ecamera agai n .
Press the shutter release button ha!fway_
Press the
l-¢q button, the MENU button, or the INFO buttonl