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358 Technical Notes
D Lens Care
• Keep the CPU contacts clean.
• Use a blower to remove dust and lint from the lens surfaces.
To
remove smudges and fingerprints, apply a small amount of ethanol
or lens cleaner to a soft, clean cotton cloth or lens-cleaning tissue and
clean from the center outwards using a circular motion, taking care
not to leave smears or touch the glass with your fingers.
• Never use organic solvents such as paint thinner or benzene to clean
the lens.
• The lens hood or NC filters can be used to protect the front lens
element.
• Attach the front and rear caps before placing the lens in its flexible
pouch.
• When a lens hood is attached, do not pick up or hold the lens or
camera using only the hood.
• If the lens will not be used for an extended period, store it in a cool,
dry location to prevent mold and rust.
Do not store in direct sunlight
or with naphtha or camphor moth balls.
• Keep the lens dry.
Rusting of the internal mechanism can cause
irreparable damage.
• Leaving the lens in extremely hot locations could damage or warp
parts made from reinforced plastic.