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Technical Notes—Caring for the Camera
The Low-Pass Filter
The LBCAST image sensor that acts as the cam era’s picture element is fi tted
with a low-pass fi lter to prevent moiré. Al though this fi lter prevents foreign
objects from adhering directly to the image sensor, under certain con di tions
dirt or dust on the fi lter may appear in photographs. If you suspect that dirt
or dust in side the camera is affecting your pho to graphs, you can check for
the pres ence of for eign ob jects on the low-pass fi lter as described below.
1
Turn the camera off and connect an EH-6 AC adapter (available sep a -
rate ly). If you do not have access to an EH-6 AC adapter, take the cam-
era to a Nikon-au tho rized service center.
2
Remove the lens and turn the camera on.
3
Press the but ton and select Mirror lock-
up from the set up menu ( 208). Highlight
Image sensor cleaning and press the multi
se lec tor to the right. The mes sage, “Press
shutter-release but ton” will be displayed in
the cam era mon i tor, and a row of dash es will
be dis played in the con trol pan el and view-
fi nder.
OK
Mirror lock-up
OFFOFF
ON Image sensor cleaning
SET UP
4
Press the shut ter-re lease but ton all the way
down. The mir ror will be raised and the shut-
ter cur tain will open, re veal ing the low-pass
fi l ter, and the row of dashes in the con trol
panel will blink.
5
Holding the camera so that light falls on the
low-pass fi lter, ex am ine the fi lter for dust or
lint. If there are for eign ob jects on the fi lter,
the fi lter requires cleaning. See the fol low ing
sec tion.