Instructions
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Thank you for purchasing a Canon product.
Canon’s RF24-105mm F4 L IS USM is a
standard 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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Safety Precautions
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
Do not look directly at the sun or other strong
z
light sources through a lens. This may result in
loss of sight.
Do not leave a lens in the sun without the lens
z
cap attached. The lens may concentrate entering
sunlight and cause a malfunction or fire.
Caution
Do not leave the product in places exposed to
z
extremely high or low temperatures. The product
may cause burns or injury when touched.
Do not insert your hand or fingers into the
z
product. This may result in injury.
Details pertaining to risks that may
result in death or serious injury.
Details pertaining to risks that may
result in injury.
Caution
Do not leave the product in excessive heat such as
z
in a car in direct sunlight. High temperatures can
cause the product to malfunction.
Details pertaining to risks that may result in
damage to property.
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General Precautions
Handling Precautions
If the lens is taken from a cold environment into a
z
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.
Please also read any lens related handling
z
precautions listed in your camera’s instruction
manual.
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This device complies with Part
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.
15 of the FCC Rules.
CAN ICES-3 (B) / NMB-3 (B)
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Nomenclature
Zoom ring (→ 7)
Focus mode switch (→ 7)
Hood mount (→ 12)
Filter mounting
thread (→ 13)
Control ring (→ 9)
Focusing ring (→ 7)
Image stabilizer switch (→ 10)
Lens mount index (→ 6)
Zoom position index
(→ 7)
Zoom ring lock lever
(→ 8)
Rubber ring (→ 6)
Contacts (→ 6)
Lens mount (→ 6)
z For detailed information, reference page numbers are provided in parentheses (→ **).
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1.
Attaching and Detaching the Lens
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.
z Set the camera’s power switch to OFF when
attaching or detaching the lens.
z Attach the lens cap before detaching the lens
from the camera.
z After 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.
z Contacts 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.
z The lens mount has a rubber ring to improve
dust-resistance and water-resistance
performance. This rubber ring may cause
friction marks to appear around the camera’s
lens mount, although this will have no effect on
usage.
zRubber rings can be replaced at Canon Service
Center. (chargeable)
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2.
Setting the Focus Mode
Focus mode switch
Focusing ring
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.
z Quickly turning the focusing ring may result in
delayed focus.
zThe lens’ focusing ring is electronic.
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. (Full-time manual focus)
However, the camera settings need to be changed.
3.
Zooming
To zoom, turn the lens’ zoom ring.
z Be sure to finish zooming before focusing.
Zooming after focusing can affect the focus.
z Blurring may temporarily occur if the zoom ring
is quickly turned.
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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.
1 Turn the zoom ring to
the widest position (24
mm).
z The zoom ring cannot be fixed in place at any position other than
the widest position.
2 Slide the zoom ring lock
lever in the direction
indicated by the arrow.
To release the zoom ring, slide
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the zoom ring lock lever in the
direction opposite to the arrow.
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5.
Control Ring
The control ring can be assigned the functions
that are commonly used with cameras, such as
shutter speed and aperture settings.
Control ring
The click action of the control ring allows you to
have a sense of how much it is being turned.
Please refer to the camera's instructions for
details on how to use the control ring.
z
There are cases in which the sound of control ring
operations may be recorded when shooting movies.
zThe clicking sensation of the control ring can
be removed by the Canon Service Center.
(chargeable)
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6.
Image Stabilizer
This function provides image stabilization
appropriate for shooting conditions (such as
shooting still subjects and panning shots).
Set the image stabilizer switch to ON when you
want to use the Image Stabilizer.
z Set the image stabilizer switch to OFF when
you are not going to use the Image Stabilizer.
z The Image Stabilizer cannot compensate for a
blurred shot caused by a subject that moved.
z The Image Stabilizer may not be fully effective if
you shoot from a violently shaking vehicle or other
transportation.
zThe Image Stabilizer operates for about two
seconds after turning off the camera. Do not
detach the lens during that time. This may cause
the lens to malfunction.
zWhen using a tripod, it is recommended that you
set the image stabilizer switch to OFF.
zEven with a monopod, the Image Stabilizer will
be as effective as during hand-held shooting.
However, depending on the shooting conditions,
there are cases in which the Image Stabilizer
effect may be less effective.
z When shooting a still subject, it compensates for
camera shake in all directions.
z It compensates for vertical camera shake during
panning shots in a horizontal direction, and
compensates for horizontal camera shake during
panning shots in a vertical direction.
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Image Stabilizer
The Image Stabilizer for this lens is suited to hand-held shots in the following conditions.
z In semi-darkened areas such as indoors or
outdoors at night.
z In locations where a flash cannot be used,
such as art museums and theater stages.
z In situations where your footing is uncertain.
z In situations where fast shutter speed settings
cannot be used.
z Panning shots of
vehicles, trains, etc.
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7.
Hood
The custom lens hood cuts out unwanted light and protects the front of the lens from rain, snow, and
dust.
Attachment position mark
Red dot
Button
Red dot
Attachment position mark
● Attaching the Hood
Align the red attachment position mark on the
hood with the red dot on the front of the lens,
and then turn the hood in the direction of the
arrow until you hear a click.
z If the hood is not attached properly, vignetting (darkening of the perimeter of the picture) may occur.
z Grasp and turn the base of the hood when attaching and detaching it. There are cases in which it may
become deformed if the hood is turned with it grasped near to the rim.
Red dot
Stop position mark
● Detaching the Hood
Keep your finger pressed down on the button
located on the side of the hood, and then turn
the hood in the direction of the arrow until the
attachment position mark on the hood is aligned
with the red dot on the front of the lens to detach
it.
The hood can be reverse-mounted on the lens
for storage.
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8.
Filters (Sold separately)
You can attach filters to the filter mounting thread
on the front of the lens.
z Only one filter may be attached.
z If you need a polarizing filter, use the Canon
Circular Polarizing Filter PL-C B.
z Detach the hood when adjusting the polarizing
filter.
9.
Close-up Lenses
(Sold separately)
Attaching a 500D Close-up Lens enables close-
up photography.
It provides a magnification of 0.05x to 0.39x.
z Close-up Lens 250D cannot be attached
because there is no size that fits the lens.
z MF mode is recommended for accurate
focusing.
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Specifications
Focal Length/Aperture 24-105mm f/4
Lens Construction 14 groups, 18 elements
Minimum Aperture f/22
Angle of View Horizontal: 74°- 19° 20′, Vertical: 53°- 13°, Diagonal: 84°- 23° 20′
Min. Focusing Distance 0.45 m/1.48 ft.
Max. Magnification 0.24x (at 105 mm)
Field of View
Filter Diameter 77 mm
Max. Diameter and Length 83.5 x 107.3 mm/3.29 x 4.22 in.
Weight Approx. 700 g/24.69 oz.
Hood EW-83N
Lens Cap E-77 II
Case LP1319
z The lens length is measured from the lens mount surface to the front end of the lens.
Add 24.2 mm/0.95 in. when including the lens cap and dust cap.
z The maximum diameter, length and weight listed are for the lens itself only.
z All data listed is measured according to Canon standards.
z Product specifications and appearance are subject to change without notice.
Approx. 539 x 353 - 143 x 96 mm/
21.22 x 13.90 – 5.63 x 3.78 in. (at 0.45 m/1.48 ft.)
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CT1-D037-A 0718Ni © CANON INC. 2018
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