Canon EF 2X II Extender has been discontinued, here are some related products you might like:

Canon EF2X II Extender

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The Canon EF 2x II Extender is a high-quality teleconverter that preserves the image quality of the lens it's mounted to and multiplies its focal length by 2x. When combined with pro level EOS cameras & EF supertelephoto lenses with image stabilization, near imperviousness to weather extremes is achieved thanks to rubber gasket seals. Improved antireflective internal coatings also increase transmissivity & performance in backlit conditions.

The 2x extender (also known as a teleconverter) will multiply the focal length of the existing lens by 2x, and will cut back the amount of light by 2 f/stops. For example, using a 2x teleconverter with a 300mm lens will effectively increase the focal length to 600mm. A lens set to f/2.8 will now be f/5.6. Teleconverters are best used with longer telephoto lenses and are not recommended for lenses wider than 50mm, e.g. 28-105mm (35mm format).

Compatible with:

  • EF200/1.8L
  • 200/2.8L
  • 300/2.8LU
  • 300/ 4.0L
  • 400/2.8L
  • 400/5.6LU
  • 500/4.5L
  • 600/4.0LU
  • 70-200/2.8LU
Canon EF 2X II Extender
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