Extending the focal length of a lens by a factor of 1.4x, the Extender EF 1.4X III incorporates phenomenal optical performance with minimal chromatic aberration and is a perfect complement to many of Canon's super-telephoto lenses. It features an integrated microcomputer for seamless communication between the body, lens and extender; benefits from careful lens placement and coatings to minimise ghosting and flare and even has a new fluorine coating that keeps dirt, marks and fingerprints to a minimum. An integral part of many professional systems, the Extender EF 1.4X III maintains high standards not only optically, but also in terms of robust, dust-resistant and weather-sealed construction.

Compatibility:

- EF 100-400mm f/4.5-5.6L IS USM

- EF 135mm f/2L USM

- EF 180mm f/3.5L Macro USM

- EF 200mm f/2.8L II USM

- EF 200mm f/2L IS USM

- EF 300 2.8 L USM

- EF 300mm f/2.8L IS USM

- EF 300mm f/4L IS USM

- EF 400mm f/2.8L IS USM

- EF 400mm f/4 DO IS USM

- EF 400mm f/5.6L USM

- EF 500mm f/4L IS II USM

- EF 500mm f/4L IS USM

- EF 600mm f/4L IS II USM

- EF 600mm f/4L IS USM

- EF 70-200mm f/2.8L IS USM

- EF 70-200mm f/2.8L USM

- EF 70-200mm f/4L IS USM

- EF 70-200mm f/4L USM

- EF 800mm f/5.6L IS USM