Canon EF 100-400mm f/4.5-5.6L IS USM User manual

ENG
Instructions

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Thank you for purchasing a Canon product.
Canon RF100-400mm F5.6-8 IS USM is a
telephoto zoom lens for use with EOS R series
cameras.
z“IS” stands for Image Stabilizer.
z“USM” stands for Ultrasonic Motor.
Camera Firmware
Please use the latest version of firmware with the
camera in use. For details on whether the firmware is
the latest version or not, and for details on updating
the firmware, 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.
zDo not look directly at the sun or other strong
light sources through a lens. This may result in
loss of sight.
zDo not leave a lens in the sun without the lens
cap attached. The lens may concentrate entering
sunlight and cause a malfunction or fire.
Caution
Details pertaining to risks that
may result in injury or damage to
other objects.
zDo not leave the product in places exposed to
extremely high or low temperatures. The product
may cause burns or injury when touched.
zDo not insert your hand or fingers into the
product. This may result in injury.
Safety Precautions

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Handling Precautions
zDo not leave the product in excessive heat such as
in a car in direct sunlight. High temperatures can
cause the product to malfunction.
zIf 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.
zThe lens interior may appear to waver, but this
does not indicate a defect or failure, and will not
cause any problems in use.
zIn order to optimize aperture control, there are
occasions in which the diaphragm blades will
move during zooming and focusing, even when
the aperture value is set for aperture priority AE or
manual exposure, etc.
zPlease also read any lens related handling
precautions listed in your camera’s instruction
manual.
General Precautions

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This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this
device must accept any interference received, including
interference that may cause undesired operation.
Do not make any changes or modifications to the equipment
unless otherwise specified in the instructions. If such
changes or modifications should be made, you could be
required to stop operation of the equipment.
This equipment has been tested and found to comply with
the limits for a class B digital device, pursuant to part 15
of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful
interference to radio communications.
However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference
by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and
receiver.
• Connect the equipment into an outlet on a circuit different
from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician
for help.
CAN ICES-3 (B) / NMB-3 (B)

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Filter mounting thread
(→15)
Focus mode switch (→7)
Image stabilizer switch (→11)
Zoom ring lock lever (→9)
Hood mount (→13)
Control ring (→10)
Zoom ring (→8)
Contacts (→6)
Lens mount (→6)
Lens mount index (→6)
Zoom position
index (→8)
Focusing ring (→7)
zFordetailedinformation,referencepagenumbersareprovidedinparentheses(→**).
Nomenclature

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Lens mount index
Lens release button Dust cap
Attaching the Lens
Align the lens mount indexes of the lens and
camera, and turn the lens clockwise until you
hear a click.
Detaching the Lens
Turn the lens counterclockwise while pressing
the camera’s lens release button. Detach the
lens once it has stopped turning.
Please refer to the camera’s instructions for
details.
zSet the camera’s power switch to OFF when
attaching or detaching the lens.
zAttach the lens cap before detaching the lens
from the camera.
zAfter detaching the lens, place the lens with the
rear end up and attach the dust cap to prevent
the lens surface and contacts from getting
scratched. Make sure the lens and dust cap
mount indexes are aligned when attaching the
dust cap.
zContacts that are scratched, soiled, or have
fingerprints on them may result in faulty
connections or corrosion, which may lead to
malfunctions. If the contacts get soiled, clean
them with a soft cloth.
1. Attaching and Detaching the Lens

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2. Setting the Focus Mode
Focusing ring
Focus mode switch
To shoot in autofocus (AF) mode, set the focus
mode switch to AF.
To use only manual focusing (MF), set the focus mode
switch to MF, and focus by turning the focusing ring.
zQuickly turning the focusing ring may result in
delayed focus.
zThe lens’ focusing ring is electronic.
zWith a camera capable of electronic full-time
manual focus, manual focusing is always
possible whenever camera operations are
possible. However, this requires a change in
camera settings.
zWhen AF operation is set to [ONE SHOT],
manual focus is possible after autofocusing
has been completed by continuing to press the
shutter button halfway. However, this requires a
change in camera settings.
Please refer to the camera
’ s instructions for details.

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3. Zooming
To zoom, turn the zoom ring.
Minimum focusing distance: changes
according to the focal length.
Focal length Minimum
focusing distance Magnification
100 mm 1.2 m / 3.94 ft. 0.09x
200 mm 0.88 m / 2.89 ft. 0.24x
300 mm 0.95 m / 3.12 ft. 0.34x
400 mm 1.05 m / 3.44 ft. 0.41x
zBe sure to finish zooming before focusing.
Zooming after focusing can affect the focus.
zOnce a close-up subject is in focus, zooming
may cause the subject to come out of focus.
In this instance, move back from the subject and
refocus.
zBlurring may temporarily occur if the zoom ring
is quickly turned.
zPlease be careful not to let your fingers get
caught in between the lens portion that extends
and the lens body when zooming.

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4. Fixing the Zoom Ring
The zoom ring can be fixed to keep the lens at the shortest point. This function is convenient for
carrying a camera on a strap because it prevents the lens from extending.
2Slide the zoom ring lock
lever in the direction
indicated by the arrow.
zTo release the zoom ring, slide
the zoom ring lock lever in the
direction opposite to the arrow.
1Turn the zoom ring to
the wide end position
(100 mm).
zThe zoom ring cannot be fixed in place at any position other than
the wide end position.