Nikon D5 - Manual (Page 372)

350
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Foreign Matter on the Low-Pass Filter
Foreign matter entering the camera when lenses or body caps are
removed or exchanged (or in rare circumstances lubricant or fine
particles from the camera itself ) 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 camera mount, lens
mount, and body cap. Avoid attaching the body cap or exchanging
lenses in dusty environments.
Should foreign matter find its way onto the low-pass filter, use the low-
pass filter cleaning option as described on page 345. If the problem
persists, clean the filter manually (
0 347) 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 the clean
image options available in some 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 a
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
flash units, should be included when the camera is inspected or
serviced.