Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses

The Canon Extender EF 2x III is 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 includes 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, or even has a new Fluorine coating that helps to keep soiling, smears, fingerprints to a minimum. Extender EF 2x III meets important standards on the subject of rugged, dustproof and water-proof construction, and will have to be in each and every professional’s camera bag.
Compatible with Make a selection EF Mount Lenses. Note: This lens is only compatible with fixed focal length L-series lenses 135mm and over, in addition to the EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100-400/4.5-5.6L
2.0x magnification factor
9 elements in 5 groups lens construction
Spectra coating reduces ghosting/flare
Dust and water-resistant