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|Light Loss||2 Stops|
|Weight||11.46 oz (325g)|
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.
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.
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.
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.
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
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.
Works great with my 70-200mm f/2.8 IS II USM lens.
Superb extension and AF performance
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.
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...
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