Pentax OPTIO 33L Operating Manual page 37

On the MF setting, press the four-way controller ( • _-) to enlarge the
central portion of the screen to full screen on the LCD monitor.
Adjust the focus with the four-way controller while watching the image
on the monitor.
For distant focus
Q For closer focus
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Once the focus is set, press any button other than the four-way
controller ( _ _- ), or take your finger off of the four-way controller for _ ........
about 2 seconds. The camera will switch to the standard Capture
screen.
_m_ , When focusing l ho!d down the four-way Controller (• 1_) to focus
",,,,,_ quickly.
Enlarged display is not available near maximum magnification in
digital zoom.
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Saving the Focus Mode _ p.72