Canon AF 35 ML - Manual (Page 37)

very hot areas, such as the trunk or glove
compartment of a car. Keep it out of humid
and dusty places.
4 Water, spray, excessive humidity and sand
are your camera's worst enemies. Clean it
especially well immediately after you use it at
the beach.
5
The battery does not work well at very
low temperatures (below 0°C, 32°F). If you
plan to shoot in cold conditions, keep the
camera warm until just before you shoot. It is
a good idea to carry spare batteries; keep
them warm also until they are needed.
6 Replace the batteries every year even if
they are not used since they will discharge
gradually.