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Safety Precautions - Canon EF 200-400mm f/4L IS USM Extender 1.4X Instruction

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Safety Precautions

Handling Cautions
If the lens is taken from a cold environment into a
warm one, condensation may develop on the lens
surface and internal parts. To prevent condensation
in this case, first put the lens into an airtight plastic bag
before taking it from a cold to warm environment. Then
take out the lens after it has warmed gradually. Do the
same when taking the lens from a warm environment
into a cold one.
Do not leave the lens in excessive heat such as in a
car in direct sunlight. High temperatures can cause
the lens to malfunction.
Conventions used in this instruction
Warning to prevent lens or camera malfunction
or damage.
Supplementary notes on using the lens and
taking pictures.
Safety Precautions
Do not look at the sun or a bright light source
through the lens or camera. Doing so could result in
loss of vision. Looking at the sun directly through the
lens is especially hazardous.
Do not point the lens or camera at the sun or
photograph it. This is because the lens concentrates
the sun's rays even when the sun is outside the image
area or when shooting with backlight, which could
cause malfunction or fire.
Whether it is attached to the camera or not, do
not leave the lens under the sun without the
lens cap attached. This is to prevent the lens from
concentrating the sun's rays, which could cause a fire.
When the lens is mounted on a camera, be sure to
also hold the camera by the lens, including when
mounting on a tripod. Only holding by the camera
could result in scratches on the camera body or the
lens itself. The lens may also detach from its mount
and fall, causing injury.
Do not use a strap attached to the camera. The mount
may break, resulting in the lens falling off and causing
injury or in scratches on the camera. Be sure to use
the camera with a dedicated strap attached correctly to
the strap mount on the lens.
Do not stand on top of the lens case. You may fall and
injure yourself.
Do not pile lens cases on top of one another as they
may fall and cause injury.



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