EF-EOS R 0.71x - Lens Adapter CANON - Free user manual and instructions

Product Type	Lens Adapter (Speed Booster)
Model	EF-EOS R 0.71x
Mount (Front)	Canon EF mount
Mount (Rear)	Canon RF mount
Magnification Factor	0.71x focusing distance reduction
Compatible Cameras	Canon EOS C70
Dimensions (W x H x D)	Approx. 77.2 x 76.6 x 20.7 mm (3.04 x 3.02 x 0.81 in)
Weight	Approx. 200 g (7.05 oz) adapter only; 230 g (8.11 oz) including lock plates
Materials	Metal and high-grade plastic with rubber ring for dust/water resistance
Autofocus Support	Yes (with full-function lenses)
Image Stabilizer Support	Yes (with full-function lenses)
Accessories Included	Lock Plate, Front Cap, Rear Cap, Hex Wrench
Contact Cleaning	Clean with soft cloth if soiled
Rubber Ring Replacement	Available at Canon Service Center (chargeable)
Safety Warning	Do not leave in extreme high/low temperatures or in direct sunlight
FCC Compliance	Class B digital device, Part 15
Full-function Lenses (as of Dec 2020)	EF16-35mm f/2.8L III USM, EF24-70mm f/2.8L II USM, EF24-105mm f/4L IS II USM (more on Canon website)

Frequently Asked Questions - EF-EOS R 0.71x CANON

What is the Canon EF-EOS R 0.71x lens adapter?

It is a mount adapter that allows you to use Canon EF lenses on Canon RF-mount cameras with a 0.71x focal length reduction, effectively increasing the lens's maximum aperture and providing autofocus and image stabilization support.

Which cameras are compatible with this adapter?

As per the manual, the adapter is compatible with the Canon EOS C70. For other RF-mount cameras, compatibility may vary; check Canon's website for updates.

How do I attach the adapter to the camera?

Turn the camera off, align the mount index on the adapter with the camera's mount index, then turn the adapter clockwise until it clicks. Then firmly attach the two lock plates using the supplied hex wrench. Finally, attach the lens similarly.

Can I use any EF lens with this adapter?

Most EF lenses can be used, but full functionality (autofocus, IS) is guaranteed only with full-function lenses listed in the manual (e.g., EF16-35mm f/2.8L III USM). For other lenses, manual exposure and focus are recommended, and some corrections may not be available.

How do I clean the contacts on the adapter?

If the contacts are soiled, clean them gently with a soft, dry cloth. Avoid scratching the contacts, as this can cause malfunctions.

What is the rubber ring for, and can it be replaced?

The rubber ring on the rear mount improves dust-resistance and water-resistance. It can be replaced at a Canon Service Center for a fee.

Is there any safety precaution I should follow?

Do not leave the adapter in extreme heat (e.g., car in direct sunlight) or cold. High temperatures can cause malfunction. Also, always attach front and rear caps when detaching the adapter to protect the contacts.

Does the adapter affect lens functionality like autofocus and IS?

Yes, when used with full-function lenses, the adapter supports autofocus and image stabilization. For non-full-function lenses, manual focus is recommended.

What are the dimensions and weight of the adapter?

The adapter dimensions are approximately 77.2 x 76.6 x 20.7 mm (3.04 x 3.02 x 0.81 in). It weighs about 200 g (7.05 oz) for the adapter alone, or 230 g (8.11 oz) including the lock plates.

Where can I find the latest list of full-function lenses?

Canon regularly updates the list. Check the Canon website for the most current information on full-function lenses compatible with this adapter.

USER MANUAL EF-EOS R 0.71x CANON

① Lens release lever
② Mount index (lens side)
③ Front mount
④ Front contacts
⑤ Mount index (camera side)
⑥ Rear mount
⑦ Rear contacts
⑧ Rubber ring
⑨ Lock plate

Thank you for purchasing a Canon product.

The Canon MOUNT ADAPTER EF-EOS R 0.71x is a mount adapter providing a 0.71x focusing distance for EF lenses *. It enables autofocusing, image stabilizers and other functions included in the lens attached to the camera to be used.

* Refer to "Full-function lenses.

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.

Conventions used in this instruction

Warning to prevent lens or camera malfunction or damage.

Supplementary notes on using the adapter and taking pictures.

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)

Do not leave the product in excessive heat such as in a car in direct sunlight. High temperatures can cause the product to malfunction. When detaching the adapter, be sure to attach the front and rear cap to protect the contacts. Make sure the adapter and cap mount indices are aligned when attaching the caps. 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. The rear mount on the adapter has been fitted with 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.

Rubber rings can be replaced at Canon Service Center (chargeable).

■ Attaching and Detaching the Adapter

Attaching Procedures

1. Turn the camera OFF.

2. Attach the adapter onto the camera.

Align the mount index found on the adapter with the same mark found on

the camera, and turn the adapter clockwise until you hear a click. (Fig. 1)

1. Attach the lock plates onto the camera.

Attach the two lock plates firmly and evenly with the use of the hex

wrench supplied. (Fig. 2)

1. Attach the lens to the adapter.

Align the mount index found on the lens with the same mark found on the adapter, and turn the lens clockwise until you hear a click. (Fig. 3)

Detaching Procedures

1. Turn the camera OFF

2. Detach the lens from the adapter.
   Turn the lens counterclockwise while pushing the lens release lever found on the adapter. Detach the lens once it has stopped turning.

3. Detach the lock plates from the camera.
   Detach the two lock plates with the use of the hex wrench supplied. 4. Detach the adapter from the camera.
   Turn the adapter counterclockwise while pressing the camera's lens release button. Detach the adapter once it has stopped turning.

■ Specifications

Full-function lenses* (as of December 2020):

EF16-35mm f/2.8L III USM

EF24-70mm f/2.8L II USM

EF24-105mm f/4L IS II USM

* Additional full-function lenses are scheduled to be released in the future. Please check the Canon website for the latest information.

When using lenses that are not full-function lenses:

There may be errors in information displays.

Manual exposure adjustment is recommended

Manual focus adjustment is recommended for accurate focusing. Peripheral illumination correction and lateral chromatic aberration correction cannot be enabled.

Compatible cameras: EOS C70

Mounts: Front mount: Canon EF mount

Rear mount: Canon RF mount

Front Cap: Camera Cover R-F-3

Rear Cap: Lens Dust Cap RF

Size (Width x Height x Depth):

Approx. 77.2 mm x 76.6 mm x 20.7 mm /

3.04 in. x 3.02 in. x 0.81 in

Weight: Approx. 200 g / 7.05 oz. (adapter only),

Approx. 230 g / 8.11 oz. (including the lock plates)

Accessories: Lock Plate, Front Cap, Rear Cap, Hex Wrench

• The size listed are for the adapter itself only.
• All data listed is measured according to Canon standards.
  • Product specifications and appearance are subject to change without notice.

© CANON INC. 2020

Technical line drawing of two mechanical brackets with labeled parts (no text or symbols present)

Diagram of a Canon DSLR camera with a lens assembly, showing no text or symbols on the device itself.