Pentax K-R Operating Manual page 61

1
Turn the main switch to [ON].
The camera will turn on.
Set the main switch to the position [OFF]
to turn off the camera.
, Always turn the camera off when not in Use.
• The powerwill automatically turn offwhen you do not perform any operations
within a set period of time. To reactivate the camera, turn it on again or
perform any of the following:
Press the shutter release button halfway.
Press the _ button, MENU button, or INFO button.
• By default, the camera is set to turn off automatically after 1 minute of
inactivity. You can change the setting in [Auto Power Off] of the [& Set:up 3]
menu: (p.281)