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EOS digital SLRs are backed up by the world's most comprehensive system of interchangeable lenses. From 14mm ultra wide angle to 600mm super telephoto, the 60+ lenses in the EF series cover all possible shooting requirements.

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Extender EF 2x II

EF-S 17-85mm f4-5.6 IS USM >

Extender EF 2x II Lens

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The EF 2x II doubles the focal length of any lens it's mounted to, and reduces its effective aperture by two stops. The effective aperture of the lens is increased by one or two stops respectively. Autofocusing does not operate if the effective maximum aperture is greater than f/5.6 (greater than f/8 on the EOS 1V and EOS 3).

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