Canon Extender EF 1.4 X Mk III

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.

Focal Length & Maximum Aperture    Magnification: 1.4x
Lens Construction    7 elements in 3 groups
Max.

Diameter x Length, Weight    2.8 x 1.1 in, 7.9 oz. / 72.0 x 27.2