Canon Announces 1.4x III & 2.0x III

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Canon Rumors Guy

Canon EOS 40D
CR Pro
  • Jul 20, 2010
    <div id="attachment_4843" class="wp-caption aligncenter" style="width: 585px"><a href=""><img class="size-full wp-image-4843" title="14tc" src="" alt="" width="575" height="183" /></a><p class="wp-caption-text">Canon TC 1.4 III</p></div>
    <p><strong>London, 26th August 2010</strong> – Canon today unveils two lens extenders designed for its L-series range of new super-telephoto lenses. Designed for photojournalists, nature and sports photographers who need to get close to distant and challenging subjects, the Extender EF 1.4x III and Extender EF 2x III increase the focal length of a lens by a factor of 1.4x and 2x respectively while still delivering superb image quality. To ensure the best possible image quality in all shooting conditions, they also combine enhanced environmental protection, redesigned optics and improved data communication between lens and camera.</p>
    <p><strong>Canon professional image quality</strong></p>
    <p>Allowing professional photographers to shoot distant subjects without having to carry a number of heavy lenses with them, these new extenders ensure there is no compromise on image quality.  The Extender EF 1.4x III features three lens groups of seven elements, and the Extender EF 2x III features three groups of nine elements, ensuring improved optical performance. All optical elements use Canon’s Super Spectra coating, reducing ghosting and flare to minimise post-processing requirements. A new Fluorine Coating on the front and rear elements makes marks, such as spots left by water or fingerprints, much easier to clean than standard coatings.</p>
    <p>To facilitate the accurate transfer of imaging data between the lens and camera body, both models feature an integrated processor which ensures all focusing, metering and ID information is available – allowing the photographer to capture crisp, well-exposed images. When combined with the latest range of premium Canon L-series lenses, these extenders enable higher AF accuracy compared to previous generations, ensuring professionals achieve perfectly sharp shots, even when capturing moving subjects.</p>
    <div id="attachment_4844" class="wp-caption aligncenter" style="width: 585px"><a href=""><img class="size-full wp-image-4844" title="2tc" src="" alt="" width="575" height="183" /></a><p class="wp-caption-text">Canon TC 2.0 III</p></div>
    <p><strong>Redesigned for high performance</strong></p>
    <p>The Extender EF 1.4x III and Extender EF 2x III have been designed to complement the latest range of L-series lenses, matching their appearance and offering a visible differentiation from previous models. A carefully positioned lens release mechanism also makes it easy to mount the extenders quickly, reducing the time that the camera and lens are exposed to the environment. The extenders offer the exceptional build-quality expected from Canon’s professional products, and are resistant to both dust and water, allowing photographers to use them in extreme shooting conditions.</p>
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    EOS RP
    Aug 26, 2010
    Re: Canon Announces 1.4x III & 2.0x III

    I'd also be interested to see a side-by-side comparison with the mkII's, to see if there is an IQ improvement, in particular for the 2x which is a bit suspect right now. I'm not sure the problem with the 2x mkII is that it actually degrades the IQ or just makes already present lens imperfections more apparent. It would make sense therefore to test with a well-corrected lens, say the new EF 300/2.8L IS II (which must be really exceptional if it's better than the already exceptional mkI).
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    Re: Canon Announces 1.4x III & 2.0x III

    Anyone knows why Canon added 2 elements to each extender ?

    How can Canon increase the number of elements *and* increase the IQ at the same time ?

    [OK, I'm not naive to the point of thinking Canon can put a single divergent element in the extender and ship it out, to my understanding that would introduce chromatic aberations, but could someone educate me why are six to eight elements needed to fix all the defects ?]
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    I post too Much on Here!!
    CR Pro
    Jul 21, 2010
    Re: Canon Announces 1.4x III & 2.0x III

    Canon 14-24 said:
    The big thing I want to see is a comparison of a 70-200 2.8 II with the 2x III compared at 400mm with the 100-400mm.

    Check the ISO 12233 crops on Once the new teleconverters become available, I'm sure Bryan will test them with current lenses, and the 70-200 II will be high on the list of lenses to test. The 70-200mm holds up pretty well to even the MkII extenders. The 70-200 II + 1.4x II is pretty much equivalent to the 100-400mm @ 300mm (almost as good as the 300mm f/4L IS prime, in fact), but the 70-200 II + 2x II falls well short of the 100-400 @ 400mm.
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