Canon Extender EF 1.4x III Tele Extender, USA

Extending a lenses focal length by a factor of 1.4x, Extender EF 1.4x III incorporates phenomenal optical performance with minimal chromatic aberration and is a perfect complement to many of Canon super telephoto lenses. It features a built-in microcomputer for seamless communication among camera body, lens and extender; features careful lens placement and coatings to minimize ghosting and flare and even has a new Fluorine coating that keeps soiling, smears and fingerprints to a minimum. An integral part of many professional systems, Extender EF 1.4x III maintains high standards not only optically, but also in terms of rugged, dustproof and water resistant construction. Note: This lens 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 compatibility information with the Extender EF 2x III. Lens Compatibility Chart EF 135mm f/2L USM - AF Possible - EF 180mm f/3.5L Macro USM - AF Possible - The autofocusing range is from 2.6 feet/0.8m to infinity. EF 200mm f/2.8L II USM - AF Possible - EF 200mm f/2L IS USM - AF Possible - EF 300mm f/2.8L IS USM - AF Possible - EF 300mm f/4L IS USM - AF Possible - EF 400mm f/2.8L IS USM - AF Possible - EF 400mm f/4 DO IS USM - AF Possible - EF 400mm f/5.6L USM - AF Not Possible - With the EOS-1Ds Mark III, EOS-1Ds Mark II, EOS-1D Mark III, EOS-1D Mark II, EOS-1Ds, EOS-1D, EOS-1v and EOS-3, AF is possible with the center focusing point only EF 500mm f/4L IS USM - AF Possible - EF 600mm f/4L IS USM - AF Possible - EF 800mm f/5.6L IS USM - AF Not Possible - With the EOS-1Ds Mark II, EOS-1Ds, EOS-1D Mark II N, EOS-1D Mark II, EOS-1D, EOS-1v, EOS 1v HS and EOS-3, AF is possible with the center focusing point only EF 1200mm f/5.6L USM - AF Not Possible - EF 70-200mm f/2.8L IS USM - AF Possible - If the lens is attached to an EOS camera, having multiple focusing points and an Extender is attached to the lens, only the center focusing point will be useable for AF. EF 70-200mm f/2.8L USM - AF Possible - EF 70-200mm f/4L IS USM / USM - AF Possible - EF 100-400mm f/4.5-5.6L IS USM - AF Not PossibleIn most cases, autofocus is disabled if extender is combined with this lens. All other lens functions work normally.Mark III, EOS-1D Mark II, EOS-1Ds, EOS-1D, EOS-1v and EOS-3, AF is possible with the center focusing point only. The Image Stabilizer does not operate with the following cameras: EOS650, 630, 620, 600, RT, 700, 750, 850, EOS-1, A2, A2E, 10s, ELAN, Rebel, Rebel S, Rebel II and RebelSII.