Canon Extender EF 2x III review
Designed to extend a lenses focal length by a factor of 2x, the redesigned
Canon Extender EF 2X III delivers optical performance on par with the
finest 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, flare and
chromatic aberration, and even has a new Fluorine coating that keeps
soiling, smears, fingerprints to a minimum. Extender EF 2X III meets
necessary standards in terms of rugged, dustproof and water-resistant
construction, and should be in every professional’s camera bag.