• Canon Extender EF 1.4X III
• x 1 Canon Extender EF 1.4X III 
• x 1 Extender Cap E II 
• x 1 Lens Dust Cap E (Rear) 
• x 1 Lens Case LP811 

What is the Canon EF 1.4x III Extender?

The Canon EF 1.4x III Extender increases the focal length of compatible EF lenses by a factor of 1.4x, providing an extended reach and added magnification for long-distance subject matter.

What types of lenses can I use with the Canon EF 1.4x III Extender?

The Canon EF 1.4x III Extender is compatible with most EF and EF-S lenses, with the exception of the EF-M lenses and any EF-S lenses that include image stabilizers.

Does the Canon EF 1.4x III Extender affect the lens's aperture?

Yes, the Canon EF 1.4x III Extender reduces the maximum aperture by 1 stop. For example, if the lens has a maximum aperture of f/2.8, it will be reduced to f/4 when the extender is attached.

Will the Canon EF 1.4x III Extender reduce image quality?

No, the Canon EF 1.4x III Extender is designed to maintain the original image quality of the lens, while providing a telephoto effect.

The Canon Extender EF 1.4X III is designed for select Canon EF mount L-series telephoto lenses. It increases the focal length of a lens by a factor of 1.4x while still delivering superb image quality. To ensure the best possible image quality in all shooting conditions, it combines redesigned optics, improved data communication between lens and camera and enhanced environmental protection. It is ideal for photojournalists and wildlife, nature and sports photographers who need to get close to distant and challenging subjects and it reduces the need to carry heavy telephoto lenses.

The Extender EF 1.4X III features seven optical elements in three groups and all optical elements have Canon's Super Spectra coating to reduce ghosting and flare. A new Fluorine Coating on the front and rear elements makes marks, such as spots left by water or fingerprints, much easier to clean than standard coatings.

o facilitate the accurate transfer of imaging data between the lens and camera body, the extender features an integrated processor which ensures all focusing, metering and ID information is available - allowing the photographer to capture balanced, well-exposed images. When combined with the latest range of premium Canon L-series lenses, these extenders enable AF accuracy even when capturing moving subjects. When attached, the 1.4x extender reduces the effective maximum aperture by 1 stop.

A carefully positioned lens release mechanism also makes it easy to mount the extenders quickly, reducing the time that the camera and lens are exposed to the environment. The extenders offer the exceptional build-quality expected from Canon's professional products, and are resistant to both dust and water, allowing photographers to use them in extreme shooting conditions.

Note: This converter is only compatible with fixed focal length L-series lenses 135mm and over, as well as the EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100-400/4.5-5.6L. Additionally, please see the lens and/or camera body manual for full autofocus compatibility information with the Extender EF 1.4X III.

Key Features of the Canon Extender EF 1.4X III

• EF Mount Teleconverter
• 1.4x Magnification Factor
• Microcomputer Controlled
• Communication Between Lens & Camera
• Spectra Coating Reduces Ghosting/ Flare
• Protective Fluorine Coating
• Dust and Water Resistant
• Compatible with Select EF Mount Lenses

• MPN - EF14XIII
• GTIN - 013803122145