Introducing the EF  200-400mm f/4L IS USM Extender 1.4x
 – improved performance and versatility for  professional sports and wildlife photographers
United Kingdom, Republic  of Ireland, 14 May 2013 – Canon today adds a new category to  its range of high-performance super-telephoto lenses, with the introduction of  the EF 200-400mm f/4L IS USM Extender 1.4x to Canon's acclaimed  L-series. The EF 200-400mm f/4L IS USM Extender 1.4x features a flexible  200-400mm focal range with a fixed f/4 aperture, 4-stop optical Image  Stabilizer and for the first time in a commercially available lens, a built-in  1.4x extender. These features combine to provide an outstandingly versatile  lens for professional sports or wildlife photographers. A robust magnesium  alloy design, environmental protection and specialised lens coatings also make  it ideal for mobile use, combining with the finest quality optics to deliver  exceptional results, even in the harshest conditions. 
Get closer  to the action with superior image quality
  The reach of  the EF 200-400mm f/4L IS USM Extender 1.4x is boosted by its internal 1.4x  extender, which is engaged or disengaged at the flick of a lever to provide an  extended focal length of 280mm to 560mm – allowing photographers to get even  closer to distant action. Ensuring the highest image performance, the optical  design includes both fluorite and Ultra-low Dispersion (UD) lens elements,  which help minimise chromatic aberration and eliminate colour blurring.  Advanced anti-reflection SubWavelength Structure Coating (SWC) and Super  Spectra Coating also reduce ghosting and flare. Thanks to the use of the latest  optical technologies, image performance is unaffected when the integrated  extender is used. 
  With a fixed  f/4[i] aperture the use of high shutter speeds to capture fast-paced action or a  low-light scene is possible. A newly designed optical Image Stabilizer, which  provides users with a four stop advantage, while IS ‘Mode 3’ applies image  stabilisation only at the time of exposure – ensuring that photographers can  pan with fast-paced action without IS overcompensating for movement. This  feature is ideal for sports photographers, who typically have only a  split-second to capture a subject in front of them.
  Powerful,  flexible focusing
  The EF  200-400mm f/4L IS USM Extender 1.4x features Canon's pioneering ring-type  Ultrasonic Motor providing fast, silent autofocusing. For those who prefer to  fine-tune focus themselves, full-time manual override allows photographers to  manually focus at any moment when using AF. The Power Focus (PF) mode also  increases versatility during movie shooting with the EOS-1D C or EOS-1D X,  enabling photographers to achieve an accurate pull-focus effect at one of two  speeds, simply by twisting the focus recall ring and stopping at a pre-set  distance. 
  High-performance  design for professional demands
  Designed to  answer professional demands for superior image quality and versatile zoom  range, the EF 200-400mm f/4L IS USM Extender 1.4x a boasts a premium-quality  design befitting Canon's industry-renowned L-series lenses. 
  The tough  magnesium alloy chassis ensures that, despite the inclusion of the 1.4x  extender, the lens is a similar weight to lenses of comparable focal length.  Fluorine coatings on the front and rear lens elements also reduce the ability  of dirt to cling to the lens surface, while a dust and water-resistant  construction allows photographers to shoot in challenging weather conditions.  The combination of outstanding optical performance, versatility, weight and  tough construction will make it an essential part of any professional sports or  wildlife photographer's kitbag. 
  EF  200-400mm f/4L IS USM Extender 1.4x key features:
  - Built-in 1.4x extender, for extra  magnification when you need it
 
  - Shoot in low light with four-stop Image  Stabilizer
 
  - High image quality using Fluorite lens  elements 
 
  - Fast AF with USM technology 
 
  - Robust design for use in the toughest  environments
 
Pricing and availability
  The EF  200-400mm f/4L IS USM will be available from June with an RRP of £11,999.99 /  €13,999.99 
Notes
[i] F5.6 aperture when the internal 1.4x extender is activated
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