Pentax Optio 550 Operating Manual page 154

Playback button
Switches to Playback mode. (
Four-way controller (
Changes the EV compensation in modes other than
Changes the shutter speed in
Four-way controller (
Adjusts the focus in
Sets the aperture value in
Sets the shutter speed in
Selects the type of filter in
Selects Picture mode in
OK button
Sets the selected menu item. (
When pressed in
controller (
Display button
Changes the information displayed on the LCD monitor.
(
Menu/Fn button
Displays the active menus in Capture mode and retrieves the
functions registered on the four-way controller. (
32
. ( p.76)
) reverts to the function set by the mode dial.
p.38)
p.30)
)
mode. (
)
mode. ( p.41)
mode. (
and
mode. (
mode. (
mode. (
p.34)
mode, the function on the four-way
and
p.57)
p.57, 55)
p.56)
p.70)
p.59)
p.34, 137)