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TIPS ON LENS CARE
Dust on the outside of the lens should be removed carefully with a soft-
haired brush or a soft, clean, dry cloth. We recommend micro-fiber cloths
(available from photographic and optical specialists) that are stored in a pro-
tective container and can be washed at temperatures of up to 40°C (without
fabric soften er, never iron!).If stains and finger have to be removed, use such
a cloth and clean with a circular movement starting at the center of the lens.
Do not use the type of cloths used especially for cleaning eyeglasses since
these are impregnated with chemicals which can damage the glass used for
high performance lenses.
In order to ensure fast and smooth lens changes, the bayonet has been
coated with a thin layer of grease in the factory. Normally, this lubricating
film will remain on the lens for years, even if the lens is wiped from time to
time. In the event that a grease solvent is used when cleaning, a fresh layer
of grease should be applied. To do this, apply a small amount of vaseline to
the bayonet with your finger and spread it with a clean cloth.
Important: Make sure not to apply too much vaseline to the bayonet, espe-
cially to omit the lens identification bar code (7), because residual grease
could otherwise remain in the recess and lead to further grime accumulating.
This could even cause the code to become illegible and thus interfere with
some camera functions in digital M-models. In addition to the designation by
type, each lens has an individual serial number. Please note this number, e.g.
in your documents.
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