Telephoto extender designed to double Canon EF lens focal length
Ideal for shooting close-ups from a distance at sporting events
Weather-resistant and anti-reflective internal construction
Maintains autofocus with any EOD body with f/2.8 or faster aperture
Measures 2.8 inches in diameter and 2.3 inches long; weighs 9.3 ounces
Amazon.com Product Description
Designed to double the focal length of any compatible Canon EF lens, the Canon EF 2x II extender telephoto accessory is ideal for sporting events and nature photography. The lens boasts a new seven-element design, along with the same weather-resistant and anti-reflective internal construction as the companion EF 1.4x II extender. More significantly, the extender supports autofocus with any EOS body provided the lens has an f/2.8 or faster maximum aperture (the EF 2x II reduces effective aperture by two stops). The EF 2x II--which also maintains an EOS camera's Image Stabilization technology--carries a one-year warranty.
Magnification: 2.0x
Lens construction: 7 elements in 5 groups
Dimensions: 2.8 inches in diameter and 2.3 inches long