Pentax Optio 330RS Operating Manual page 62

Setting the position of the autofocus (AF) area
When the mode is set on
area can be changed.
Press the Playback/OK button to determine the position of the AF
area.
When the mode is set on
memo
spot. In this case, the AF spotbeam will not be emitted.
Changing the AF Area (Focusing Area)
60
the position of the autofocus (AF)
,
The AF area moves upward.
The AF area moves downward.
The AF area moves to the left.
The AF area moves to the right.
, the AF area is automatically set on
p.67