Canon EOS Rebel xsi - Manual (Page 118)

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Whenever you set the power switch to <1> or <2>, the Self
Cleaning Sensor Unit operates to automatically shake off the dust on
the front of the sensor. Normally, you need not be aware of this
operation. However, you can execute the sensor cleaning at anytime as
well as disable it.
1 Select [Sensor cleaning].
Under the [6] tab, select [Sensor
cleaning], then press <0>.
2 Select [Clean now
f
].
Select [Clean nowf], then press
<0>.
Select [OK], then press <0>.
X The screen will indicate that the
sensor is being cleaned. Although
there will be a shutter sound, a
picture is not taken.
In step 2, select [Auto cleaningf] and set it to [Disable].
X The sensor cleaning will no longer be executed when you set the
power switch to <1> or <2>.
3 Automatic Sensor Cleaning
Cleaning the Sensor Now
Disabling Automatic Sensor Cleaning
For best results, do the sensor cleaning while the camera bottom is
placed on a table or other surface at a perpendicular angle.
Even if you repeat the sensor cleaning, the result will not improve that
much. Right after the sensor cleaning is finished, the [Clean now
f ]
option will remain disabled temporarily.
H73_06.fm Page 118 Tuesday, November 13, 2007 7:38 PM