Canon Extender EF 2.0X III (4410B002) — EF Mount Teleconverter for Super Telephoto Lenses

The Canon 4410B002 Extender EF 2.0X III doubles a lens's focal length while maintaining optical quality on par with Canon's top super-telephoto lenses. Designed for professional use, this EF-mount teleconverter features a built-in microcomputer to ensure full communication between camera body, lens and extender and preserves accurate AF and exposure data. Optical design uses 9 elements in 5 groups with careful element placement and advanced coatings to reduce ghosting, flare and chromatic aberration. A Spectra coating specifically combats ghosting and flare, while a new Fluorine coating resists soiling, smears and fingerprints for easier cleaning. The Extender EF 2x III is built to professional standards with rugged, dustproof and water-resistant construction and is compatible with select EF-mount lenses. Key features: EF Mount Teleconverter, 2.0x magnification factor, microcomputer-controlled communication between lens and camera, Spectra coating to reduce ghosting/flare, Fluorine protective coating, dust and water resistant, compatible with select EF mount lenses, 9 elements in 5 groups optical construction. Package contents: extender 2x lens, extender cap, lens dust cap (rear), lens case, manual, warranty. ProductHeight: 2.800 ProductWidth: 2.800 ProductDepth: 2.100 ProductWeight: 0.71 AvailableInColors: False Color: . BatteryType: No battery required Language: English