Canon MARK IV User Manual (en)

Camera Care
This camera is a precision instrument. Do not drop it or subject it to physical 
The camera is not waterproof and cannot be used underwater. If you 
accidentally drop the camera into water, promptly consult your nearest 
Canon Service Center. Wipe off any water droplets with a dry cloth. If the 
camera has been exposed to salty air, wipe it with a well-wrung wet cloth.
Never leave the camera near anything having a strong magnetic field such 
as a magnet or electric motor. Also avoid using or leaving the camera near 
anything emitting strong radio waves such as a large antenna. Strong 
magnetic fields can cause camera misoperation or destroy image data.
Do not leave the camera in excessive heat such as in a car in direct sunlight. 
High temperatures can cause the camera to malfunction.
The camera contains precision electronic circuitry. Never attempt to 
disassemble the camera yourself.
Use a blower to blow away dust on the lens, viewfinder, reflex mirror, and 
focusing screen. Do not use cleaners that contain organic solvents to clean 
the camera body or lens. For stubborn dirt, take the camera to the nearest 
Canon Service Center.
Do not touch the camera’s electrical contacts with your fingers. This is to 
prevent the contacts from corroding. Corroded contacts can cause camera 
If the camera is suddenly brought in from the cold into a warm room, 
condensation may form on the camera and internal parts. To prevent 
condensation, first put the camera in a sealed plastic bag and let it adjust to 
the warmer temperature before taking it out of the bag.
If condensation forms on the camera, do not use the camera. This is to avoid 
damaging the camera. If there is condensation, remove the lens, card and 
battery from the camera, and wait until the condensation has evaporated 
before using the camera.
If the camera will not be used for an extended period, remove the battery 
and store the camera in a cool, dry, well-ventilated location. Even while the 
camera is in storage, press the shutter button a few times once in a while to 
check that the camera is still working.
Avoid storing the camera where there are corrosive chemicals such as a 
darkroom or chemical lab.
If the camera has not been used for an extended period, test all its functions 
before using it. If you have not used the camera for some time or if there is 
an important shoot coming up, have the camera checked by your Canon 
dealer or check the camera yourself and make sure it is working properly.
Handling Precautions