Nikon 300mm-f-4-IF-ED-AF-S-Nikkor - Manual (Page 16)

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Lens Care
•Clean the lens surface with a blower brush. To remove dirt and smudges, use a
soft, clean cotton cloth or lens tissue moistened with ethanol (alcohol) or lens
cleaner. Wipe in a circular motion from center to outer edge, taking care not to
leave traces or touch other parts.
•Never use thinner or benzene to clean the lens as this might damage the lens, result
in a fire, or cause health problems.
•To protect the front lens element, an NC filter is recommended at all times. A lens
hood also helps protect the front of the lens.
•When storing the lens in the lens case, attach both front and rear caps.
•When the lens will not be used for a long time, store it in a cool, dry place to
prevent mold. Also store the lens away from direct sunlight or chemicals such as
camphor or naphthalene.
•Do not get water on the lens or drop it in water as this will cause it to rust and
malfunction.
•Reinforced plastic is used for some parts of the lens. To avoid damage, never leave
the lens in an excessively hot place.
•Never use an air blower to clean the inside rear portion of the lens.
Because the diaphragm blades are exposed, they may be damaged by a strong
burst of air. Also be sure to attach the rear lens cap LF-1 when the lens
is not in use to protect the lens and diaphragm blades from foreign matter and
fingerprints.
Supplied Accessories
77mm snap-on front lens cap
Rear lens cap LF-1
Semi-soft case CL-M2
Optional Accessories
77mm screw-in filters, including circular polarizing filter
Teleconverters TC-14B, TC-301, TC-14E, TC-20E (Do not use the TC-20E for
autofocus operation.)