Pentax 6x7 Manual page 7

cleaning for removing dust from the surface of
a lens. To remove most of the dust, wipe it
away or brush it away gently as shown in the
photo on the left.
If you should fingerprint a lens surface, or if
it is too dirty to clean with a blower, clean the
lens with either high-quality lens cleaning paper
or a very soft cloth wrapped around the end
of a match stick, etc. The cloth or paper can
be dampened with lens cleaning solution or
alcohol. Wipe gently with a circular motion
from the center outward . When cleaning
larger lenses, wrap the paper or cloth directly
around your finger to clean more effectively.
With extremely dirty lenses, shift the cloth or
paper frequently to avoid wiping the dirt back
onto the lens. A few wipes in this manner
should remove most stains. If gentle cleaning
fails to remove a stain , the lens should be
taken into an authorized Pentax Service Center
for servicing.
Excessive heat, dropping and scratches will
also damage lenses. Exercise care so as not
to drop lenses and do not toss them around
carelessly . Always cover a lens with both front
and rear caps when storing it away in its case
or bag .
When not using lenses regularly, especially
during humid weather, remove it from its case
and check for mildew. Dry out the case if
necessary . Light mildew can easily be wiped
off. If mildew has formed on the inside of the
lens, the lens may require repair .
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