Instructions
ENG
Safety Precautions ............................................................................2
General Precautions ..........................................................................3
Nomenclature ....................................................................................6
1. Attaching and Detaching the Lens ................................................7
2. Setting the Focus Mode ................................................................8
3. Zooming ........................................................................................9
4. Hood (Sold separately) ...............................................................10
5. Filters (Sold separately) ..............................................................12
Specifications ..................................................................................13
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Thank you for purchasing a Canon product.
Canon RF75-300mm F4-5.6 is a telephoto zoom lens for use with
EOS R series cameras.
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
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 fire.
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.
●
Do not insert your hand or fingers into the product. This may result
in injury.
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General Precautions
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, 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 precautions listed in your
camera’s instruction manual.
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General Precautions
Shooting Precautions
●
When this lens is attached, the following settings cannot be specified
on the camera.
• Display simulation [Exposure+DOF]
• Focus Distance disp.
• Distortion Correction during movie recording
• Av 1/8-stop incr. during movie recording
• Automatic Aperture when attached to a CINEMA EOS camera
●
The following settings can be specified on the camera, but do not work
with this lens.
• Lens electronic MF
• Focus ring rotation
• RF lens MF focus ring sensitivity
• Focus Preset
• Control ring direction to set Tv/Av
• Object Distance (Bar), Object Distance (Numeric) display when
attached to a CINEMA EOS camera
●
The following settings can be specified on the camera, but some
settings may not work with this lens.
• Retract lens on power off (This function does not work when the focus
mode switch is set to MF)
●
On some cameras, [Correction data not available] or [
] may be
displayed by [Digital Lens Optimizer]. In that instance, use EOS Utility
to add the lens correction data to the camera. For details, refer to the
EOS Utility Instruction Manual.
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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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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.
●Set the camera’s power switch to OFF when attaching or detaching
the lens.
● Attach the lens cap before detaching the lens from the camera.
● 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.
● 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.
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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.
● During AF operation, do not touch the rotating parts of the lens.
●When the focus mode switch is set to AF, the lens cannot be focused
manually.
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3. Zooming
To zoom, turn the zoom ring.
●Be sure to finish zooming before focusing. Zooming after focusing can
affect the focus.
●Please 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. Hood (Sold separately)
The custom lens hood reduces unwanted light that causes flare and
ghosting and protects the front of the lens from rain, snow, and dust.
Attaching the Hood
Align the hood with the hood mount, and then turn the hood in the
direction of the arrow while holding the focus ring to firmly attach the
hood.
Hood mount
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Hood (Sold separately)
Detaching the Hood
Rotate the hood in the direction of the arrow while holding the focus
ring to remove it.
The hood can be reverse-mounted on the lens for storage.
● If the hood is not attached properly, vignetting (darkening of the
perimeter of the picture) may occur.
● 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.
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5. Filters (Sold separately)
Youcanattachfilters(Φ58)tothefiltermountingthreadonthefrontof
the lens.
● Only one filter may be attached.
● If you need a polarizing filter, use the Canon Circular Polarizing Filter
PL-C B.
●Detach the hood when adjusting the polarizing filter.
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Specications
Focal Length/
Aperture
75-300mm f/4-5.6
Lens Construction 9 groups, 13 elements
Maximum Aperture f/4-5.6
Minimum Aperture f/32-45
Angle of View
Horizontal: 27° - 6°50,
Vertical:18°11’ - 4°35’,
Diagonal: 32°11’ - 8°15’
Min. Focusing
Distance
1.5 m/4.92 ft.
Max. Magnification 0.25x (at 300 mm)
Field of View
Approx. 556 x 372mm/21.89 x 14.65 in.
(at 75mm, 1.5m/4.92 ft.)
Approx. 139 x 94mm/5.47 x 3.70 in.
(at 300mm, 1.5m/4.92 ft.)
Filter Diameter 58 mm
Max. Diameter and
Length
Approx. 71.2 x 146.1 mm/2.80 x 5.75 in.
Weight Approx. 507 g/17.9 oz.
Hood ET-60 (Sold separately)
Lens Cap E-58II*
Lens Dust Cap LensDustCapRF*
Case LP1222 (Sold separately)
*Thiscomesincludedwiththelens,butcanalsobepurchasedseparately.
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Specications
● 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.
● The maximum diameter, length and weight listed are for the lens
itself only.
● You cannot use extenders.
● All data listed is measured according to Canon standards.
● Product specifications and appearance are subject to change without
notice.
CT1-D411-C © CANON INC. 2025 0126SZ
