Canon EOS 5D Mark IV L-series Zoom Lens Kit Owner's Manual

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Whenever you set the power switch to <1> or <2>, the Self 
Cleaning Sensor Unit is activated to automatically shake off any dust on 
the front of the sensor. Normally, you need not pay attention to this 
operation. However, you can manually perform sensor cleaning or can 
disable this unit as follows.

 

Under the [53] tab, select [Sensor 
cleaning], then press <0>.

Select [Clean nowf].

 

Select [Clean nowf], then press 
<0>.

 

Select [OK].

X

The screen will indicate that the sensor is being cleaned. (A small 
sound may be heard.) Although there will be a mechanical sound of 
the shutter during sensor cleaning, the picture will not be recorded to 
the card.

X

After sensor cleaning is finished, the camera will automatically 
restart (turn off and on).

f