Canon EOS-1D Mark IV - Manual (Page 34)

Turning on the Power
Power/Quick Control Dial Switch
<OFF> : The camera is turned off and
does not operate. Set to this
position when not using the
camera.
<ON> : The camera turns on.
<J> : The camera and <0> operate
(p.43).
About the Automatic Self-Cleaning Sensor
Whenever you set the power switch to
<ON/J> or <OFF>, the sensor
cleaning will be executed automatically.
During the sensor cleaning, the LCD
monitor will display < >■
Even during the sensor cleaning, you
can still shoot by pressing the shutter
button halfway (p.41) to stop the
sensor cleaning and take a picture.
If you turn on/off the power switch
<ON/J>/<OFF> at a short interval,
the < .th > icon might not be displayed.
This is normal and not a problem.
About Auto Power Off
• To save battery power, the camera turns off automatically after
approx. 1 minute of non-operation. To turn on the camera again, just
press the shutter button halfway (p.41).
• You can change the auto power-off time with the menu's [9' Auto
power off] setting (p.52).
SI If you set the power switch to <OFF> while an image is being recorded to
the card, [Recording ...] will be displayed and the power will turn off after
the card finishes recording the image.
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