Nikon D4s User Manual page 441

1
Select Clean at startup/
shutdown.
Display the Clean image
sensor menu as described in
Step 2 on the previous page.
Highlight Clean at startup/
shutdown and press 2.
2
Select an option.
Highlight an option and
press J.
D
Image Sensor Cleaning
Using camera controls during startup interrupts image sensor cleaning.
Cleaning is performed by vibrating the low-pass filter. If dust can not be
fully removed using the options in the Clean image sensor menu, clean
the image sensor manually 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.
J button
n
419