Pentax Program Plus Program Plus Manual - Page 65

Pentax Program Plus Manual

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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. 61•

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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.
61•