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Canon Extender EF 2X III

Model: 4410B002

Canon Warranty - USA Version
Canon 4410b002 1
Canon 4410b002 1
Canon 4410b002 2
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Specifications

General Information

Magnification 2.0x
Lens Elements/Groups 9/5
Light Loss 2 Stops
Length 2.1" (52.7mm)
Diameter 2.8" (72.0mm)
Weight 11.46 oz (325g)
Expert Reviews
The digital picture.34755376
3 February 2011

The Canon EF 2x III Extender mounts between your Canon EOS Digital SLR and a compatible lens (primarily Canon L Series lenses), extending the focal length of the lens by a very noticeable 2x.

User Reviews
1 June 2016
10/10

With my 7D MkII and my 70-200 L 2.8 IS II, I can get to 400mm. I ran the Dot Tune calibrations on my 70-200 with and without the 2x II and the results are I need ZERO micro focus adjustment.

22 March 2017
10/10

I acquired this extender to add length to my new 100-400mm L MII lens. I use it on my 7D. I knew from reading my manuals that AF is not possible so that is not an issue as I educated myself in this regard.But what images, I really cannot find fault with the image quality of this extender.

15 March 2014
10/10

This is a superb extender which works flawlessly with the Canon prime telephoto and super telephoto lenses. I bought it to supplement my Canon 300 mm f/2.8 IS II lens to give me an effective 600 mm f/5.6.

  • +

    Very cost effective way of increasing your telephoto reach. It's very light and compact.

  • -

    Loss of two stops of light compared with the mated lens.

22 October 2011

Tested this like 5 weeks ago. The Extender 2x III performs better on my 70-200L IS Mk2 than on the Mk1. There is a noticable difference in AF and IQ. I had them side by side. The Extender 2x III gave no improvement on the 70-200L IS Mk1 over the Extender 2x II. I got the Extender 2x III in the end.

  • +

    Good build, good image quality, still fast AF

  • -

    price

2 weeks ago
10/10

I definitely enjoy using the extender for my lenses when I can't get the reach on their specifications. I would only want the extender to have auto focus for all my lenses. The 100-400mm won't AF using the extender but the 70-200 f2.8 does.

3 weeks ago
8.0/10

Works great with my 70-200mm f/2.8 IS II USM lens.

16 August 2017
10/10

Superb extension and AF performance

9 August 2017
10/10

Bought this extender to take advantage of my EF 70-200 mk II IS L lens for backyard bird photography. I had always been looking at making this purchase and after I picked up the 70-200 it was an absolute must. Great combo.

3 August 2017
10/10

I purchased this product specifically for my EF 70-200mm f/2.8 lens. I had been looking at this and the 1.4x extender for some time and wondering whether it would be something that would give me a boost when I needed it without having to carry another lens (the 70-200mm is already quite heavy and...

31 July 2017
10/10

Excellent high quality images on my Canon 7D MkII with Canon EF F4L 70-200mm. Would definitely recommend.Buyers should be aware of restricted range of AF points when used with the 7D Mk II and EF F4L 70-200 with Extender 2X III compared to Extender 1.4X III

Product Highlights
  • EF Mount Teleconverter
  • 2.0x Magnification Factor
  • Microcomputer Controlled
  • Communication Between Lens & Camera
  • Spectra Coating Reduces Ghosting/ Flare
  • Protective Fluorine Coating
  • Dust and Water Resistant
  • Compatible with Select EF Mount Lenses
9.6/10
Average Expert Score
8.7/10
Average User Score
In The Box
  • Canon Extender EF 2X III
  • Extender Cap E II
  • Lens Dust Cap E (Rear)
  • Lens Case LP811
  • Limited 1-Year Warranty
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