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 of 7 elements in 3 groups
- Max. Diameter x Length - 2.8" x 1.1" (72.0 x 27.2mm)
- Weight - 7.9 oz (225g)
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