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Instructions
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EF70-300mm f/4-5.6 IS II USM
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Thank you for purchasing a Canon product.
The Canon EF70-300mm f/4-5.6 IS II USM
is a telephoto zoom lens, for use with EOS
cameras.
●● “IS” stands for Image Stabilizer.
●● “USM” stands for Ultrasonic Motor.
Camera Firmware
Please use the latest version of rmware with the camera
in use. For details on whether the rmware is the latest
version or not, and for details on updating the rmware,
please check the Canon website.
Conventions used in these instructions
Warning to prevent lens or camera malfunction
or damage.
Supplementary notes on using the lens and
taking pictures.
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Precautions to ensure that the camera is used
safely. Read these precautions thoroughly. Make
sure all details are observed in order to prevent
risks and injury to the user and other people.
Warning
Details pertaining to risks that may
result in death or serious injury.
●● Do not look directly at the sun or other strong light
sources through a lens. This may result in loss of
sight.
●● Do not leave a lens in the sun without the lens cap
attached. The lens may concentrate entering sunlight
and cause a malfunction or re.
Caution
Details pertaining to risks that may
result in injury or damage to other
objects.
●● Do not leave the product in places exposed to
extremely high or low temperatures. The product
may cause burns or injury when touched.
Safety Precautions
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Handling Precautions
●● Do not leave the product in excessive heat such as in
a car in direct sunlight. High temperatures can cause
the product to malfunction.
●● 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, rst 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.
●● Please also read any lens related handling precautions
listed in your camera’s instruction manual.
General Precautions
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Shooting Precautions
This lens uses Nano USM as the drive unit for the focus lens (the lens that aligns the focus).
The motor also controls the focus lens during zooming.
1. When the camera is OFF
The motor does not operate while the camera is OFF or when the camera is OFF due to the use of the auto
power off function. Therefore, users must be aware of the following points.
●● Manual focus adjustments are not possible.
●● During zooming, delayed focus will occur.
2. When the lens is in sleep mode
If not operated for a certain period of time, this lens will enter sleep mode in order to save power. Sleep mode
differs from when the camera is OFF due to the use of the auto power off function.
In this state, the motor will not operate even if the camera is ON. Therefore, users must be aware of the
following points.
●● Manual focus adjustments are not possible.
●● During zooming, delayed focus will occur.
●● To exit sleep mode, press the shutter button halfway.
General Precautions