Nikon FM2 - Manual (Page 71)

Caution: Please note that the use
of a spray-gun type blower to clean
the lens may cause possible dam­
age to the glass (especially when
ED glass Is used for the front lens
element), by suddenly lowering the
temperature on the lens surface. To
avoid damage, hold the blower
upright, keep Its nozzle more than
30cm (approx. 12 inches) away
from the lens surface and move the
nozzle around so that the stream of
air is not concentrated in one spot.
• In a humid environment, it is
best to store the camera in a
vinyl bag with a desiccant to
keep away dust, moisture and
salt.
« Note that storing leather cases
in a vinyl bag may cause the
leather to deteriorate, so exer­
cise due care.