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D Foreign Matter on the Low-Pass Filter
Nikon takes every possible precaution to prevent foreign matter from
coming into contact with the low-pass filter during production and
shipping.
The Df, however, is designed to be used with interchangeable
lenses, and foreign matter may enter the camera when lenses are
removed or exchanged.
Once inside the camera, this foreign matter
may adhere to the low-pass filter, where it may appear in photographs
taken under certain conditions.
To protect the camera when no lens is
in place, be sure to replace the body cap provided with the camera,
being careful to first remove all dust and other foreign matter that may
be adhering to the body cap.
Avoid exchanging lenses in dusty
environments.
Should foreign matter find its way onto the low-pass filter, clean the
filter as described above, or have the filter cleaned by authorized Nikon
service personnel.
Photographs affected by the presence of foreign
matter on the filter can be retouched using Capture NX 2 (available
separately; 0 325) or the clean image options available in some third-
party imaging applications.
D Servicing the Camera and Accessories
The camera is a precision device and requires regular servicing.
Nikon
recommends that the camera be inspected by the original retailer or
Nikon-authorized service representative once every one to two years,
and that it be serviced once every three to five years (note that fees
apply to these services).
Frequent inspection and servicing are
particularly recommended if the camera is used professionally.
Any
accessories regularly used with the camera, such as lenses or optional
Speedlights, should be included when the camera is inspected or
serviced.