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EF 200-400mm f/4L IS USM Extender 1.4X

Designed to satisfy the discriminating needs of sports and wildlife photographers, the EF 200-400mm f/4L IS USM Extender 1.4X is a high-performance super telephoto zoom lens with an optically matched built-in 1.4x extender for maximum versatility. With a simple flick of a switch, the zoom range can be quickly increased to 280-560mm (f/5.6). This capability is extremely useful in applications where it is not possible to change lenses quickly, while also protecting delicate equipment such as a digital SLR camera's image sensor in environments with dust and high humidity. The EF 200-400mm f/4L IS USM Extender 1.4X incorporates one fluorite and four UD lens elements, which provide excellent correction of chromatic aberration throughout the entire zoom range for professional quality images with high resolution, contrast and color fidelity, while a 9-blade circular aperture helps deliver beautiful, soft backgrounds. It utilizes inner focusing, ring USM, a high-speed CPU and optimized AF algorithms for fast and accurate autofocusing. And, with Power Focus mode, focus shifts are quiet and smooth, which is essential for filmmaking. Image stabilization is effective up to four shutter speed steps, with three image stabilization modes (standard, panning, and during exposure only) providing excellent results for a wide range of subjects. Optimized lens placement and coatings deliver outstanding color balance, while helping to minimize ghosting and flare. The lens is highly resistant to dust and water, enabling shooting even in harsh conditions. A fluorine coating on front and rear lens surfaces repels dust particles and makes the lens easier to clean.

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Print Specs

  • Focal Length 280mm – 560mm
  • Angle of View 4.25° – 8.5°
  • Lens Construction 33 elements in 24 groups
  • Minimum Focusing Distance 2m (6.562')
  • Filter Size 52mm
  • Weight 3.62kg (7.98 lb)
  • MTF Chart

Reviewed by: The-digital-picture
Canon EF 200-400mm f/4 L IS USM Extender 1.4x Lens Review
Causing great excitement among Canon photographers was the February 7, 2011 development announcement of the Canon EF 200-400mm f/4 L IS USM Ext 1.4x Lens. I was personally excited - a Canon EF 200-400mm f/4 L IS USM Lens had long been on my...
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Reviewed by: Dpreview
Canon EF 200-400mm f/4L IS USM Extender 1.4x Quick Review
About a month ago Canon announced the EF 200-400mm f/4L IS USM Extender 1.4x - the world's first SLR lens with a built-in teleconverter. With the simple flick of a switch on the top of its barrel, the lens can be turned into a 280-560mm f/5.6 optic....
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