Nikon D300 User Manual (en)

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Select an option.
Highlight one of the following 
options and press 
J.
D
Image Sensor Cleaning
The following interrupt image sensor cleaning: raising the built-in flash, 
pressing the shutter-release, depth-of-field preview, or 
B button, or 
using FV lock.
Cleaning is performed by vibrating the image sensor.
 
If dust can not be 
fully removed using the options in the [Clean image sensor] menu, clean 
the image sensor manually (pg. 376) or consult a Nikon-authorized service 
representative.
If image sensor cleaning is performed several times in succession, image 
sensor cleaning may be temporarily disabled to protect the camera’s 
internal circuitry. Cleaning can be performed again after a short wait.
Option
Description
Clean at startup
The image sensor is automatically cleaned 
each time the camera is turned on.
6
Clean at 
shutdown
The image sensor is automatically cleaned 
during shutdown each time the camera is 
turned off.
7
Clean at startup 
& shutdown
The image sensor is cleaned automatically at 
startup and at shutdown.
8
Cleaning off
(default)
Automatic image sensor cleaning off.