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.
Features:
Carefully positioned lens release mechanism makes it easy to
mount the extender quickly, reducing the time the camera and lens are exposed
to the environment.
Integrated processor communicates between camera and lens
and ensures all focusing, metering and ID information is available.
All optical elements use Canon's Super Spectra coating,
reducing ghosting and flare.
Fluorine Coating on the front and rear elements keeps
soiling, smears, and fingerprints to a minimum.
Sealed to be resistant to both dust and water, allowing
photographers to use them in extreme shooting conditions.
Maximum Aperture with the Extender - When the Extender EF1.4X III is attached,the lens maximum aperture will be smaller (darker) by 1 stop, with Extender EF2.0X III, the maximum aperture will be smaller by 2 stops. In any case, the camera will compensate the exposure automatically
Panel Features:
Mounting and Dismounting the Extender
First attach the extender to the lens, then attach it to the camera.
To detach it, follow the same procedure in reverse
To detach the Extender from the lens, slide the lens release lever as shown by the arrow, then turn the extender counterclockwise
Specifications:
Focal Length & Maximum Aperture............Magnification: 2.0x
Lens Construction......................9 elements in 5 groups
Max. Diameter x Length, Weight...........2.8 x 2.1 in, 11.5 oz. / 72.0 x 52.7mm, 325g
Note:This lens is only compatible with fixed focal length
L-series lenses 135mm and over, as well as the EF 70-200/2.8L, EF 70-200/2.8L
IS, EF 70-200/4L, and EF 100-400/4.5-5.6L. Additionally, please see the lens
and/or camera body manual for full compatibility information with the Extender
EF 2X III.