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 featuresa 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||2.8 x 1.1 in. / 72.0 x 27.2mm|
|Weight||7.9 oz. / 225g|
|Coating||Coatings minimize ghosting and flare, with new Fluorine coating|