Canon RF 24-105mm F4-7.1 IS STM User manual

ENG
Instructions

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Thank you for purchasing a Canon product.
Canon RF24-105mm F4-7.1 IS STM is a
standard zoom lens for use with EOS R
series cameras.
z“IS” stands for Image Stabilizer.
z“STM” stands for Stepping Motor.
Conventions used in these instructions
Warning to prevent lens or camera malfunction
or damage.
Supplementary notes on using the lens and
taking pictures.
Camera Firmware and
Camera Applications
Please use the latest versions of firmware and
applications with the camera in use. For details on
whether the firmware and applications in use are the
latest version or not, and for details on updating them,
please check the Canon website.
If the camera’s* firmware is not a compatible
version, the following limitations will apply.
zMagnified view functionality is not available.
zIn some cases, the camera malfunction may
occur.
* Applies to the following camera models:
EOS R and EOS RP

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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.
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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Focusing/control selector switch (→ 7)
Zoom position index (→ 10)
Hood mount (→ 13)
Filter mounting thread
(→ 14)
Zoom ring (→ 10)
Image stabilizer switch (→ 11)
Lens mount index (→ 6)
Focusing/control ring (→ 7)
Contacts (→ 6)
Lens mount (→ 6)
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. Focusing/control ring
The focusing/control ring can be used as either a
focusing ring or a control ring.
Focusing/control ring
Focusing/control selector switch
Use as a Focusing Ring
Set the focusing/control selector switch to
FOCUS. Set the focus mode (AF/MF) using the
camera’s menu.
To shoot in autofocus (AF) mode, set the
camera’s focus mode to AF.
To use only manual focusing (MF), set the
camera’s focus mode to MF, and focus by turning
the focusing ring (focusing/control ring).
zThis lens does not have a focus mode switch.
zDelayed focus may occur if the focusing ring
(focusing/control ring) is quickly turned.
zThe lens’ focusing ring (focusing/control ring) is
electronic.
zW
hen 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. Please
refer to the camera
’ s instructions for details.
Use as a Control Ring
Set the focusing/control selector switch to
CONTROL. Set the control ring function using
the camera’s menu. The control ring can be
assigned the functions that are commonly
used with cameras, such as shutter speed and
aperture settings.
Please refer to the camera’s instructions for
details on how to use the control ring.

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Shots taken with the camera’s manual focusing
(MF) mode when using this lens make the
subject seem closer and larger than with the
autofocus (AF) mode. (with the exception of
when using the tele end)
The focusing distance ranges of the wide end
are shown below.
• AF in-focus range : 20 cm/7.87 in. to ∞
• MF in-focus range : 13 cm/5.12 in. to ∞
Focusing within a range of 13 cm / 5.12 in. to less
than 20 cm / 7.87 in. is possible only when using
the MF mode. (MF-only range)
zThe focusing distance represents the distance
between the [ ] mark (focal plane mark) on the
camera and the subject.
zThe minimum focusing distance when using the
AF and MF modes changes in accordance with
the focal length of the lens.
3. Taking Closeup Shots in the Manual Focusing (MF) Mode
Wide-end Examples:
AF
MF
Focal planeSubject
20 cm/7.87 in.
AF
13 cm/
5.12 in.
MF

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Taking Closeup Shots in the Manual Focusing (MF) Mode
zSet the focusing/control selector switch to FOCUS when using the manual focusing (MF) mode.
zThe following limitations are in effect when the focus point is within the MF-only range.
• It is not possible to switch the camera’s focus mode from MF to AF. To enable this, turn the focusing ring
to the infinity setting so that the focus point is within the AF in-focus range.
• The image quality will decline compared to the AF in-focus range.
It is therefore recommended that you shoot while checking the images after each shot.
• Detection accuracy levels for the focus guide function (*1) will be lowered. Use the focus guide function
within the AF in-focus range. (*1: EOS R, EOS Ra)
• Focusing is not possible when shooting in the remote mode from PCs or smartphones.
zShooting within the MF-only range with the use of the full-time manual focusing function is also possible
when the camera’s focus mode is set at AF. However, the camera settings need to be changed. Please
refer to the camera's instructions for details.

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To zoom, turn the lens’ zoom ring.
zBe sure to finish zooming before focusing.
Zooming after focusing can affect the focus.
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’ front and the focusing/
control ring when zooming.
4. Zooming

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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.
zSet the image stabilizer switch to OFF when
you are not going to use the Image Stabilizer.
5. Image Stabilizer
zThe Image Stabilizer cannot compensate for a
blurred shot caused by a subject that moved.
zThe Image Stabilizer may not be fully effective if
you shoot from a violently shaking vehicle or other
transportation.
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.
zWhen shooting a still subject, it compensates for
camera shake in all directions.
zIt 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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The Image Stabilizer for this lens is suited to hand-held shots in the following conditions.
Image Stabilizer
zIn semi-darkened areas such as indoors or
outdoors at night.
zIn locations where the flash cannot be used,
such as art museums and theater stages.
zIn situations where your footing is uncertain.
zIn situations where fast shutter speed settings
cannot be used.
zPanning shots of
vehicles, trains, etc.

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The custom lens hood cuts out unwanted light and protects the front of the lens from rain, snow, and
dust.
6. Hood (Sold separately)
Attachment position mark
Stop position markAttachment position mark
Red dot
Red dot
Red dot
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.
Button
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.
zIf the hood is not attached properly, vignetting (darkening of the perimeter of the picture) may occur.
zGrasp 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.

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7. Filters (Sold separately)
You can attach filters to the filter mounting thread
on the front of the lens.
zOnly one filter may be attached.
zIf you need a polarizing filter, use the Canon
Circular Polarizing Filter PL-C B.
zDetach the hood when adjusting the polarizing
filter.

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Specifications
Focal Length/Aperture 24-105mm f/4-7.1
Lens Construction 11 groups, 13 elements
Maximum Aperture f/4 - 7.1 (1/3 stops), f/4 - 6.7 (1/2 stops)
Minimum Aperture f/22 - 40 (1/3 stops), f/22 - 38 (1/2 stops)
Angle of View Horizontal: 74°- 19° 20′, Vertical: 53°- 13°, Diagonal: 84°- 23° 20′
Min. Focusing Distance AF Mode : 0.2 m/0.66 ft. (at 24 mm), 0.34 m/1.12 ft. (at 105 mm)
MF Mode : 0.13 m/0.43 ft. (at 24 mm), 0.34 m/1.12 ft. (at 105 mm)
Max. Magnification AF Mode : 0.4x (at 105 mm)
MF Mode : 0.5x (at 24 mm)
Field of View
AF Mode : A pprox. 168 x 112 mm/6.61 x 4.41 in. (at 24 mm, 0.2 m/0.66 ft.)
Approx. 89 x 59 mm/3.50 x 2.32 in. (at 105 mm, 0.34 m/1.12 ft.)
MF Mode : Approx. 71 x 47 mm/2.80 x 1.85 in. (at 24 mm, 0.13 m/0.43 ft.)
Approx. 89 x 59 mm/3.50 x 2.32 in. (at 105 mm, 0.34 m/1.12 ft.)
Filter Diameter 67 mm
Max. Diameter and Length
Approx. 76.6 x 88.8 mm/3.02 x 3.50 in.
Weight Approx. 395 g/13.9 oz.
Hood EW-73D (Sold separately)
Lens Cap E-67 II
Case LP1116 (Sold separately)

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zThe 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.
zThe maximum diameter, length and weight listed are for the lens itself only.
z Close-up Lens 250D/500D cannot be attached because there is no size that fits the lens.
zAll data listed is measured according to Canon standards.
zProduct specifications and appearance are subject to change without notice.
zMultiple exposure shooting is not possible when using this lens.
zThere are cases in which using the zoom function during continuous shooting may result in
conspicuous image distortion.
zWhen the aperture is changed from the maximum aperture by an amount equivalent to one click
only, the display of the aperture value may not change in some cases. This phenomenon is due to
restrictions related to the display of the aperture values, but the actual exposure control is being
performed properly.
Specications

CT1-D142-A 0220Ni © CANON INC. 2020