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-Certain models may indicate the maximum and minimum aperture values of the lens in
approximate numbers. This is inherent to the design of the camera and not an indication
of an error.
TO ENSURE LONG-TERM SATISFACTION
-Avoid touching the glass element surface. Use photographic lens cloths or blowers to
remove dust from the lens element surface. When not using the lens, always place a lens
cap on it for protection.
-Use a lens cleaning tissue or lint cloth with a drop of cleaning solution to remove
fingerprints or dirt on the glass lens surface with a rotary motion from the center to the
edge. Use a silicone cloth to clean your lens barrel only.
-Mildew is an enemy of your lens. Clean the lens after shooting near water or in any
humid place. Store your lens in a clean, cool, dry place. When storing the lens in a lens
case, store it with commercially available drying agents such as silicagel, and change the
agent occasionally. If you find mildew on your lens, consult an authorized repair shop or
nearby photographic store.
-Do not touch the lens-camera interface contacts since dust, dirt and/or stains may cause a
contact failure between the lens and camera.
-When using your equipment [camera(s) and lens(es)] in an environment where the
temperature changes from one extreme to the other, make sure to put your equipment
temporarily in a case or plastic bag for a length of time in order for the equipment to go
through a gradual temperature shift. This will reduce potential equipment trouble.