Pentax OPTIO M30 Operating Manual page 50

6
Press the shutter release button halfway.
The setting is saved and the camera returns to capture status.
When the shutter release button is pressed fully, the picture is taken.
6
Press the DE] button.
The setting is saved and the camera returns to playback status.
6
Press the OK button or the four-way controller (•).
The setting is saved and the screen returns to Step 3.
6
Press the MENU button.
The changes are canceled and the screen returns to Step 3.
The MENU button function differs depending on the screen. Refer to
the guide indications.
Exit " Exits the menu and returns to the original screen.
_ " Returns to Step 3 with the current setting.
Cancel " Cancels the current selection, exits the menu and
returns to Step 3.