24. Shooting
in
Very
Low
Temperatures
When
you use the
AE-l
PROGRAM in
tem-
peratures
below
O°C (32° Fl, there are
two
things
you
should keep in mind. First, battery
power
may decrease
or
fail altogether. Second, extreme
temperature changes
may
damage the camera
unless certain precautions are taken.
Try
to
remember the
following:
68
1. Load a
new
battery, and keep the camera
warm
until you
are
ready
to
shoot. Try
to
finish the shooting session
as
quickly
as
possible. If you
must
shoot
for
a long time,
carry a spare battery.
Alternate the
two
bat-
teries, keeping the one
that
is
not
in use
warm
.
Do
not
throw
the original battery away. That it
does
not
perform well
in
the cold does
not
necessarily mean
that
it will
not
work
normally
again in warmer temperatures. An optional
accessory, the Canon External Battery Pack A,
is
the
most
reliable
power
source
for
uninter-
rupted shooting in
cold weather. .
2. Condensation
forming
on a camera and lens
taken
from
cold outside temperatures i
nto
a
warm
room may cause corrosion. To avoid
this,
while still outdoors place the camera
in
a
plastic bag. Then seal the bag and take
it
indoors. Leave the camera
in
the bag until
it
gradually reaches room temperature. Gener-
ally, this takes about one-half hour.
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