Canon Extender EF 2X III

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.
 
Note: This converter is only compatible with fixed focal length L-series lenses 135mm and over and all versions of the EF 70-200mm f/2.8L, EF 70-200mm f/2.8L IS, and EF 70-200mm f/4LEF 100-400mm f/4.5-5.6L.
 
HIGHLIGHTS
EF Mount Teleconverter
2.0x Magnification Factor
2-Stop Loss
Microcomputer Controlled
Communication Between Lens & Camera
Spectra Coating Reduces Ghosting/ Flare
Compatible with Select EF Mount Lenses