Pentax MX User Manual

resistance to temperature extremes and changes
The temperature range at which your camera will
continue to function properly stretches from
SO^'C to -20''C. However, resistance to cold could
be hampered by oil which has become dirty.
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 damaging to the mechanism.
Furthermore, if the camera goes from a warm
temperature to a sub-freezing one. and if tiny
drops of moisture freeze, further damage may be
done by their expansion.
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.
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Pentax MX Specifications

General

Film Format	35mm
Lens Mount	Pentax K mount
Exposure Modes	Manual
Focus	Manual
Camera Type	SLR
Shutter Speed	1 to 1/1000 second, plus B
Metering	Center-weighted