Resistance To Temperature Extremes And - Pentax PROGRAM PLUS Manual

RESISTANCE TO TEMPERATURE EXTREMES AND CHANGES
The temperature range at which your camera
will continue to function properly stretches
from
50°C
to -20°C. However, resistance to
cold could be hampered by dirty oil. Therefore,
if the camera is to operate at full efficiency In
very cold conditions, it must be overhauled and
all oil must be replaced. Sudden changes in
temperature will often cause moisture to
condense inside or outside your camera. This is
a possible source of rust, which may be extremely
harmful to the mechanism. Furthermore, if the
camera is taken from a warm temperature to
a sub-freezing one, further damage may result
from the formation of icelets.
Thus, sudden temperature changes should be
avoided as much as possible. As a guide,
a temperature change of 10°C should be allowed
to take place gradually over a period of at least
30 minutes. If this is not possible, keeping the
camera in its case or bag will help somewhat in
minimizing the effects of a rapid temperature
change.
Extremely low temperature reduces the efficiency
of the battery. Therefore, the camera should be
protected against low temperature. Put the
batteries into the camera right before shooting.
For extremely low temperature, use new batteries.
A few notes on the LCD (Liquid Crystal Display):
In high temperature, approximately 60°C or 140°F
or above, the LCD may turn black. In low
temperature, the response-time of the display may
slow down considerably.
These phenomena do not indicate either camera
break-down or break-down of the LCDs
themselves. They are characteristics of LCDs, and
the LCDs will return to normal when the
temperature becomes normal.