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is necessary, do not attempt to do it yourself but take it to an authorized Canon service facility. The film compartment also requires occasional cleaning with a blower brush to remove accumulated film dust particles which might scratch the film. When doing this, take special care NEVER to exert pressure on the shutter, the rail surfaces or the pressure plate.
Salt and sand are your camera's worst enemies. After using it on a beach, clean it thoroughly. If you accidentally drop it in the water, it may be irreparable but take it immediately to an authorized Canon service facility.
Using the Camera in Extremely Cold Conditions
In extremely cold conditions, always protect the camera from outside air and try to finish shooting as quickly as possible.
In temperatures below 0º C (32º F), the battery may be affected, so you may want to carry a spare. Keep the camera and spare battery close to your body or in a pocket to keep them warm until you are ready to take a picture. Although the battery may not function well in cold conditions, don't throw it away. It may work perfectly again when you use the camera in warmer temperatures.
Avoid extreme temperature changes. Condensation forming on a camera and lens taken from subzero outside temperatures into a warm room may cause corrosion. Let the camera gradually adjust to the temperature change by placing it in a completely sealed plastic bag for a while.