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Extending a lens's focal length 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 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, Wight 2.8 x 1.1 in, 7.9 oz / 72.0 x 27.2mm, 225g