Increase your lens' focal length by 2x without sacrificing image quality.

Ideal for press, sports, and nature photography, the extender increases the focal length of Canon L-series telephoto or telephoto zoom lenses by a factor of 2x, with higher autofocus accuracy and improved communication between camera and lens.

• Extends the master lens focal length by 2x
• Outstanding image quality
• Highly resistant to dust and water
• Improved communication between lens and camera
• Optimised lens coatings
• Compatible with L-Series telephoto and telephoto zoom lenses

Focal length extension for super-telephoto lenses. The Extender EF 2x III is specially designed to work in conjunction with L-series IS super-telephoto lenses, extending their focal length by a factor of 2x. The extender's design ensures there is no loss of lens performance or image quality.

High-quality construction. Improved anti-reflection materials inside the lens barrel and a coating around the outer edges of the lens elements reduce flare. Construction is resistant to dust and water, helping to maintain image quality.

Improved communication between lens and camera. A built-in microprocessor provides accurate transfer of data between the lens and camera, delivering improved performance in autofocus and metering.

Compatible with L-Series telephoto and telephoto zoom lenses. The Extender EF 2x III is compatible with most telephoto and telephoto zoom lenses within Canon’s flagship professional L-series range, extending the focal length while only reducing the effective aperture of the lens by two stops.