Canon EF 1.4x III Extender for Canon EF Mount

OVERVIEW:

The Extender EF 1.4X III from Canon is designed for select Canon EF mount L-series telephoto lenses. It increases the focal length of a lens by a factor of 1.4x while still delivering superb image quality. To ensure the best possible image quality in all shooting conditions, it combines redesigned optics, improved data communication between lens and camera, and enhanced environmental protection. It is ideal for photojournalists and wildlife, nature, and sports photographers who need to get close to distant and challenging subjects and it reduces the need to carry heavy telephoto lenses.

The Extender EF 1.4X III features seven optical elements in three groups and all optical elements have Canon's Super Spectra coating to reduce ghosting and flare. A new Fluorine Coating on the front and rear elements make marks, such as spots left by water or fingerprints, much easier to clean than standard coatings. To facilitate the accurate transfer of imaging data between the lens and camera body, the extender features an integrated processor which ensures all focusing, metering, and ID information is available - allowing the photographer to capture balanced, well-exposed images. When combined with the latest range of premium Canon L-series lenses, these extenders enable AF accuracy even when capturing moving subjects. When attached, the 1.4x extender reduces the effective maximum aperture by 1 stop.

KEY FEATURES:

1.4x increase of the lens's focal length

Dustproof and waterproof specifications (JIS 2 equivalent)

Lens placement and coatings are optimized to minimize the ghosting

Built-in microcomputer in the extenders enables communication between lens, extender and camera

Anti-smear coating (Silky Barrier Coating) used to enhance smear-free state of the lens surface