The power/mode indicator remains lit while the power of the camera is on. The power/mode indicator indicates the state of the camera as follows.
Orange
Shooting mode
Green
Playback mode/Printer connection mode
Yellow
Computer connection mode
Off
The power of the camera is off.
You will hear a start-up sound and see the startup image when the power comes on.
The start-up image does not appear when the viewfinder display is on in Shooting mode or the A/V OUT terminal is connected to a TV.
Be careful not to touch the lens when shooting. Please also refrain from forcing the lens with fingers or other objects. It could lead to malfunctions or damage the camera. If this occurs, turn the camera off and back on.
Turn the mode lever to (Shooting) or (Playback) while pressing the release button.
The power/mode indicator lights orange or green.
Press the <OFF> button to turn the power off.
Turning on the camera without the start-up sound and image
Press and hold the button, then turn on the power. You can also turn the power on with the LCD monitor closed.
(Shooting) or 
(Playback) while pressing the release button.
button, then turn on the power. You can also turn the power on with the LCD monitor closed.