Canon RF 24-50mm F4.5-6.3 IS STM User manual

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Instructions

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Thank you for purchasing a Canon product.
Canon RF24-50mm F4.5-6.3 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.
z
Do 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 aperture 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
Shooting Precautions
zFocus again after recovering from the auto power
off status.
zTo maintain the focus position in the shooting-ready
status, set [Auto power off] to [Disable] on the
camera.

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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 ring (→ 8)
Hood mount (→ 13)
Filter mounting
thread (→ 14)
Zoom ring (→ 7, 10)
Image stabilizer switch (→ 11)
Lens mount index (→ 6)
Focus mode/control selector switch (→ 8)
Zoom position index (→ 7, 10)
Contacts (→ 6)
Lens mount (→ 6)
Lens retracted position index(→ 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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The lens is fitted with a retraction mechanism.
This enables the length of the lens to be shortened in comparison to when shooting.
Shooting is not possible when the lens is stored.
Observe the following procedure to set the lens in the position for shooting.
Retracting Lens
1Rotate the zoom ring from the shooting
position in the opposite direction to the
white arrow.
2Continue rotating after it exceeds the
wide-angle position (24 mm).
3Rotate it to the end to align the lens
retraction position indicator with the
zoom indicator and store it.
zTake care to avoid catching your fingers, etc.,
between the lens extender and Focusing/Control
ring.
2. Shooting Preparations and Retracting Lens
Preparations from Retraction to Shooting
Rotate the zoom ring in the direction of the white
arrow until you hear a click to set the lens in the
preparatory shooting position.
zIf the lens retraction position indicator is aligned
with the zoom indicator, add slight pressure to
rotate the zoom ring in the direction of the arrow.

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3. Focusing/Control ring
The focusing/control ring can be used as either a
focusing ring or a control ring.
Focusing/Control ring
Focus mode/control selector switch
Use as a Focusing Ring
Set the focus mode/control selector switch to AF
or MF.
To shoot in autofocus (AF) mode, set the focus
mode/control selector switch to AF. Table*1
To use only manual focusing (MF), set the focus
mode/control selector switch to MF, and focus by
turning the focusing ring (focusing/control ring).
Table*2
Table: List of Focus Mode and Focusing/Control
Ring Functions Using the Focus Mode/
Control Selector Switch
Focus mode/
Control selector switch
*1 AF *3 CONTROL *2 MF
Focus mode AF *4 AF/ *5 MF MF
Focusing/
control ring
functions
Focusing ring Control ring Focusing ring
Use as a Control Ring
Set the focus mode/control selector switch to
CONTROL. Table*3
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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zDelayed focus may occur if the focusing ring
(focusing/control ring) is quickly turned.
zSetting the focus mode/control selector switch to
CONTROL will fix the focus mode as AF. Table*4
However, depending on the camera used, it is
possible to switch the focus mode to MF on the
camera. Table*5
Please refer to the camera’s instructions for
details.
Focusing/Control ring
zThe lens’ focusing ring (focusing/control ring) is
electronic.
zWith a camera capable of electronic full-time
manual focus, manual focusing is possible
in both One-Shot AF and Servo AF modes.
However, the camera settings need to be
changed.
zWhen AF operation is set to One-Shot AF,
manual focus is possible after autofocusing
has been completed by continuing to press the
shutter button halfway (electronic manual focus
function). However, the camera settings need to
be changed.
zWhen movie recording, the AF speed will be
slower than the still photo shooting mode. It is
possible to adjust the AF speed on the camera
by setting Movie Servo AF to [Enable].
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 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.
zThe Image Stabilizer will work in combination with
cameras with in-body Image Stabilizer.

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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.
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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The custom lens hood reduces unwanted light that causes flare and ghosting and protects the front
of the lens from rain, snow, and dust.
6. Hood (Sold separately)
Attachment position mark
Stop position mark
Attachment 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 the red dot on the lens is aligned with
the stop position on the hood and the hood is
firmly attached.
Detaching the Hood
Rotate the hood in the direction of the arrow until
the hood attachment position mark is aligned
with the red indicator on the front of the lens to
remove 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 (Φ58) to the filter mounting
thread on the front of the lens.
zOnly one filter may be attached.

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Specifications
Focal Length/Aperture
24-50mm f/4.5-6.3
Lens Construction 8 groups, 8 elements
Maximum Aperture f/4.5-6.3 (1/3 stops), f/4.5-6.7 (1/2 stops)
Minimum Aperture f/22-32
Angle of View Horizontal: 74° - 40°, Vertical: 53° - 27°, Diagonal: 84° - 46°
Min. Focusing Distance
0.30 m/0.98 ft. (at 24 mm), 0.35 m/1.15 ft. (at 50 mm)
Max. Magnification 0.19x (at 50 mm)
Field of View Approx. 309 x206 mm/12.17 x 8.11 in. (at 24 mm, 0.30 m/0.98 ft.)
Approx. 184 x123 mm/7.24 x 4.84 in. (at 50 mm, 0.35 m/1.15 ft.)
Filter Diameter 58 mm
Max. Diameter and Length
Approx. 69.6 x58 mm/2.74 x 2.28 in. (when lens is retracted)
Weight Approx. 210 g/7.41 oz.
Hood EW-63C (Sold separately)
Lens Cap E-58 II
Case LP1014 (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.
zYou cannot use extenders.
zMultiple exposure shooting is not possible when using this lens on certain cameras*.
* EOS R, RP, Ra, R5, R6
zThere are cases in which using the zoom function during continuous shooting may result in
conspicuous image distortion.
zAll data listed is measured according to Canon standards.
zProduct specifications and appearance are subject to change without notice.
Specications

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