The Extender EF 1.4x III features seven lens elements in three groups, and the Extender EF 2x III features nine lens elements in five groups, ensuring improved optical performance. All optical ...

Just like with any 2x teleconverter, the focal length of the attached lens is doubled, with a consequent aperture reduction of two f/stops. As such, a 70-200mm f/2.8 zoom effectively becomes roughly a ...

The Mark III edition of this Canon 1.4x Extender, or teleconverter, is the latest (and probably last) in the EF-mount series, designed for Canon cameras and compatible EF-mount Canon telephoto lenses.

We've spent a little time with the new Extender RF 1.4x and Extender RF 2x for Canon's full-frame mirrorless cameras, so ahead of our full review, check out our first impressions now... The Extender ...

To coincide with the unveiling of their new 60D DSLR, Canon has also announced four serious new lenses and a pair of extenders to go with them. Here’s the rundown. Canon EF 8-15mm f/4L USM This is ...

The Canon Extender EF 1.4x III & Canon Extender EF 2x III are expected to be available in December for an approximate retail price of $500 each. New Lens Features In addition to an anti-reflection ...

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Over the years Canon has produced a number of lenses with built-in teleconverters, but so far the RF mount has been left out of Canon's plans. This looks set to change with the first credible rumors ...

Canon’s EF 200-400mm f/4L IS USM Extender 1.4X more than satisfies the requirements of its target market. Sports and wildlife photographers should be delighted by the convenience of the built-in ...

Canon's EF 200-400 lens delivers terrific optics and unmatched zoom flexibility with an innovative built-in 1.4x telephoto extender. Stephen Shankland Former Principal Writer Stephen Shankland worked ...