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Looking after your LEICA and its lenses
LEICA lenses act like burning glasses if
they face upwards in full sunlight for
long periods. You must therefore
pro-
tect the housing and the shutter by
putting on the lens cap or keeping the
camera
in
a case, or in the shade.
The front ring of each lens
has,
in ad-
dition to its type, its
"
personal" serial
number. You should make a note of this
number,
as well as of the serial number
engraved on the top of the LEICA.
These can be very helpful
indeed
in
case of loss or theft.
A brownish-purple sheen characterizes
modern
"
coated
"
LEICA lenses. These
surface
films,
which reduce reflection
,
increase
the brightness and brilliance
of the image. The external anti-reflec-
tion coatings are wiperesistant.
Dust should be removed with a soft
brush
,
a piece of cotton cloth
(e
. g.
a
26
handkerchief) washed several times, or
lens tissue. Treated cloths
,
such as are
used
for cleaning
spectacles
,
are not
recommended
,
as they are
chemically
impregnated and may attack lens sur-
faces.
(Glass
used for spectacles has a
composition
different from
that
of op-
tical glass for high-quality lenses.) Re-
member that it is better to keep your
lens clean
,
than to keep cleaning your
lens!
A
colourless
UVa filter
can
be left per-
manently on the
lens,
to protect the
front
element from external
influences,
e. g.
of sand or sea water spray on the
beach
.
The
lens hood
,
too,
protects the
lens from accidental
finger marks
and
raindrops
.
Protect your precious lenses
with the appropriate lens caps. Added
protection is afforded by the ever-ready
case
,
No.14541
.
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