Solution
Whenever you set the power switch to ⋖ON⋗ or ⋖OFF⋗, the Self Cleaning Sensor Unit is activated to automatically shake off the dust on the front of the sensor.
Normally, you need not pay attention to this operation. However, you can choose to perform sensor cleaning manually.
1. Set the power switch to ⋖ON⋗.
2. Press the ⋖MENU⋗ button to display the menu on the LCD monitor.
3. Select the [ ] tab, select [Sensor cleaning] in the menu that appears, and then press ⋖
⋗.
4. On the [Sensor cleaning] screen, select [Clean now] and then press ⋖⋗.
5. On the screen that appears next, select [OK] and then press ⋖⋗.
The screen will indicate that the sensor is being cleaned. Although there will be a shutter release sound during the cleaning, no picture is taken.
Caution
If there is dust that cannot be removed with this procedure, refer to Manual Sensor Cleaning (EOS 80D).
Caution
*: Software and instruction manuals not included with your product can be downloaded from the Canon Web site.