Canon Extender RF 1.4x

CANON EXTENDER RF 1.4X

The Canon Extender RF 1.4x is a high-performance RF-mount teleconverter designed for enthusiast and professional photographers who need additional telephoto reach from compatible Canon RF lenses without carrying a larger or longer lens. Engineered specifically for selected lenses within the Canon EOS R System, the extender increases the attached lens's focal length by a factor of 1.4x, making it particularly valuable for wildlife, bird, safari, sports, motorsport, aviation, press and nature photography where photographers often need to frame distant subjects more tightly. Unlike simply cropping an image after capture, the RF 1.4x optically increases the effective focal length of the compatible lens while maintaining electronic communication between the lens and EOS R camera body, allowing supported autofocus, metering, image stabilisation and EXIF information to continue operating. Its sophisticated optical construction consists of 7 elements arranged in 4 groups, incorporating high-refraction, low-dispersion glass to control field curvature and chromatic aberration while Canon's optimised lens coatings and three-layer combined lens design help minimise ghosting and maintain high image quality. The 1.4x increase in focal length comes with a one-stop reduction in maximum aperture, a worthwhile trade-off when additional reach is more important than maximum light-gathering ability. Designed for demanding outdoor photography, the extender incorporates dust- and water-resistant construction and Canon's distinctive white heat-shield coating to help reduce the effects of high temperatures during extended use in direct sunlight. Despite its professional construction and optical design, it remains highly portable at approximately 224g, making it easy to keep in a camera bag as an additional reach option when travelling or working in the field. Compatible lenses include the Canon RF 100-500mm F4.5-7.1 L IS USM, where the extender can only be attached and used with the lens positioned within its 300-500mm zoom range, as well as the RF 600mm F11 IS STM and RF 800mm F11 IS STM. By transforming compatible focal lengths such as 600mm into 840mm and 800mm into an impressive 1120mm, the Canon Extender RF 1.4x provides a compact and highly practical way for compatible EOS R photographers to achieve significantly greater reach while retaining the functionality and image-quality advantages of Canon's dedicated RF system.

Key Features:

• 1.4x Focal Length Magnification – Increases the focal length of a compatible Canon RF telephoto lens by a factor of 1.4x, providing substantially tighter framing of distant subjects without requiring photographers to purchase or carry an additional super-telephoto lens.
• Designed for the Canon RF Mount – Purpose-built for selected Canon RF lenses and compatible EOS R System cameras, providing a dedicated RF-to-RF connection rather than adapting DSLR-era EF teleconverters to the mirrorless system.
• Ideal for Wildlife Photography – The additional 1.4x reach is particularly valuable when photographing animals that cannot safely or practically be approached, allowing wildlife photographers to fill more of the frame while maintaining their working distance.
• Excellent for Bird Photography – Small and distant birds frequently demand extremely long focal lengths, making the RF 1.4x Extender a valuable addition to compatible Canon bird-photography setups.
• Perfect for Safari Photography – Provides additional reach for photographing distant wildlife from a game-viewing vehicle or fixed position where physically moving closer to the subject may not be possible.
• Excellent for Sports & Action Photography – Extending a compatible telephoto lens by 1.4x can provide tighter framing of athletes and action when photographers are restricted to sidelines, grandstands or designated shooting positions.
• Useful for Motorsport & Aviation – Particularly useful when photographing racing cars, motorcycles and aircraft where subjects may remain a significant distance from the photographer.
• Maintains Autofocus Communication – Electronic communication between the camera and compatible lens is retained, allowing supported autofocus functionality to continue operating with the extender installed.
• Maintains Camera Metering – The EOS R camera continues to meter the scene through the compatible lens and extender combination, accounting for the optical characteristics of the setup.
• Maintains Image Stabilisation Communication – Compatible lens and camera stabilisation functionality can continue communicating through the extender, an important advantage when working at extremely long effective focal lengths.
• EXIF Data Communication – Electronic communication allows relevant lens and shooting information to be transmitted to the camera and recorded with the captured image.
• High-Speed Lens-to-Camera Communication – Designed specifically for the RF system to maintain the high-speed electronic communication required between compatible Canon RF lenses and EOS R camera bodies.
• 7 Elements in 4 Groups – The extender uses a dedicated seven-element, four-group optical construction designed to increase focal length while maintaining high optical performance.
• High-Refraction, Low-Dispersion Glass – Specialised optical glass helps control field curvature and chromatic aberration introduced by magnification, contributing to better sharpness, contrast and colour accuracy.
• Optimised Lens Coatings – Canon's optical coatings help control reflections within the extender, reducing the risk of flare and ghosting that could otherwise compromise contrast and image quality.
• Three-Layer Combined Lens Design – A three-layer combined optical element reduces the number of glass-to-air surfaces, helping minimise internal reflections and ghosting while maintaining strong image quality.
• One-Stop Light Loss – Using the RF 1.4x Extender reduces the lens's maximum aperture by one stop, which is the expected optical trade-off for gaining 1.4x additional focal length.
• RF 100-500mm F4.5-7.1 L IS USM Compatibility – The extender is compatible with the Canon RF 100-500mm F4.5-7.1 L IS USM, but due to the physical design of the combination, the lens must be positioned within the 300-500mm range when attaching and using the extender.
• RF 100-500mm Becomes Approximately 420-700mm – When the extender is used across the compatible 300-500mm portion of the RF 100-500mm zoom range, the effective focal-length range becomes approximately 420-700mm, providing substantially greater telephoto reach.
• RF 600mm F11 IS STM Compatibility – Pairing the extender with the compatible Canon RF 600mm F11 IS STM increases its effective focal length from 600mm to approximately 840mm.
• 840mm Super-Telephoto Reach – The RF 600mm F11 IS STM and RF 1.4x Extender combination provides an impressive 840mm focal length, particularly useful for birds, wildlife and distant outdoor subjects.
• RF 800mm F11 IS STM Compatibility – The extender can also be paired with the Canon RF 800mm F11 IS STM, increasing its already substantial telephoto reach by a further 1.4x.
• Up to 1120mm with the RF 800mm F11 – Combining the RF 800mm F11 IS STM with the RF 1.4x Extender produces an extraordinary 1120mm effective focal length, providing extreme reach for distant wildlife, birds, aviation and other specialised telephoto subjects.
• Compact Alternative to a Longer Lens – Instead of carrying an additional large super-telephoto lens, compatible photographers can keep the compact extender in their camera bag and attach it when additional reach becomes necessary.
• Approximately 224g Weight – At approximately 224g, the extender adds relatively little weight to a telephoto setup considering the substantial increase in focal length it provides.
• Compact & Travel-Friendly Design – Its small physical footprint makes the RF 1.4x easy to carry alongside compatible telephoto equipment, particularly valuable for wildlife trips, safaris and travel where camera-bag space and weight are limited.
• Dust- & Water-Resistant Construction – Designed with resistance to dust and water intrusion for greater confidence when working with compatible professional equipment in demanding outdoor environments.
• White Heat-Shield Exterior Coating – The exterior uses Canon's white heat-shield coating to help reduce heat absorption and minimise the potential effect of high temperatures on optical performance during prolonged outdoor use.
• Built for Demanding Outdoor Photography – The combination of environmental resistance, heat management and compact construction makes the extender particularly appropriate for photographers regularly working outdoors in wildlife, sports and nature environments.
• More Reach Without Digital Cropping – Because the extender optically magnifies the image projected by the lens, photographers can achieve tighter framing at capture rather than relying entirely on cropping the original image afterwards.
• Greater Subject Size in the Frame – The 1.4x magnification means a distant subject occupies a larger portion of the captured frame, particularly useful when photographing small birds or wildlife where getting physically closer is not possible.
• Excellent Addition to a Wildlife Camera Bag – Its compact size makes the RF 1.4x Extender a useful accessory to keep available alongside a compatible RF telephoto lens, allowing photographers to quickly prioritise additional reach when shooting conditions demand it.
• Professional & Enthusiast Telephoto Accessory – Designed for serious photographers who need greater flexibility from their existing compatible RF telephoto lenses without permanently committing to a larger and heavier super-telephoto setup.
• Native Canon EOS R System Integration – As a genuine Canon RF accessory, the extender is engineered around the optical, mechanical and electronic requirements of compatible Canon RF lenses and EOS R mirrorless camera bodies.
• Powerful Reach in a Portable Package – Combining 1.4x magnification, sophisticated 7-element optical construction, retained electronic communication, weather-resistant construction and a weight of approximately 224g, the Canon Extender RF 1.4x provides compatible Canon EOS R photographers with a highly portable way to significantly increase telephoto reach for wildlife, birds, sports, nature and other distant subjects.

In the box:

• Canon RF Extender 1.4x
• Canon Extender Cap RF
• Canon Lens Dust Cap RF
• Canon Lens Case LP811
• Limited 2-Year Warranty