User Guide

Coated Lenses Modern coated LEICA lenses exhibit a colored sheen on their glass
surfaces. This coating acts to reduce internal reflections, thereby en-
hancing the optical quality of the lens as well as increasing its light
transmission. The outer lens surfaces are specially hard-coated, and will
therefore stand up to normal cleaning.
In addition to its name, every LEICA lens also carries its own serial
number engraved on the front mount. Make a note of this number, as
well as of the serial number of your LEICA; it may prove to be of great
help in case of loss.
Take Care of your Lenses
Always protect the front surface of the lenses against dirt of any kind. A
colorless ultraviolet filter (LEITZ UVa) left permanently on the lens, will
protect the surface against outside influences (e.g., against sand or salt-
water spray at the seaside). The lens hood, too, guards the lens against
accidental contact with your fingers and against rain, in addition to its
main purpose of preventing unwanted light-rays from entering the lens.
Remove dust from the lens surface with a soft camel's hair brush; if
nothing else is available, use a clean soft linen rag that has been
previously laundered with pure soap. Remember: It is better to keep the
lens clean than to keep cleaning it!
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