Pentax 645N2 - Manual (Page 36)

USING THE 3-POINT AF MODE USING THE SINGLE-FRAME DRIVE MODE
34
BASIC OPERA
TION (SHOOTING)
In the 3-point autofocus system, the subject will be
focused properly even if the main subject is slightly
off-center of the AF frame.
Set the AF mode selector to [ ].
One picture is taken each time the shutter release
button is depressed.
Set the drive mode dial to [ ].