Canon SLR Lenses:

• L Series
• EF 70-200/2.8L
• EF 70-200/2.8L IS
• EF 70-200/4L
• EF 100-400/4.5-5.6L

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.