Canon EOS 90D DSLR Camera with 18-135mm Lens - Manual (Page 529)

529
Sensor Cleaning
Setting Auto Cleaning
1 Select [Auto cleaning f ].
2 Select an item.
 Use the <
Y
> <
Z
> keys to select an
item, then press <
0
>.
o For best results, clean with the camera in a stable position on a desk or other
fl at surface.
o Even if you repeat the sensor cleaning, the result will not improve much. Note
that [Clean now
f
] may not be available immediately after cleaning.
o Dots of light may appear in captured images or on the shooting screen if
the sensor is aff ected by cosmic rays or similar factors. By selecting [Clean
now
f
] , their appearance may be suppressed ( = 528).