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Canon 2XEF II 2x Extender
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- Specially Designed to Work in Conjunction with the EOS-1V and IS Super Telephoto L-series Lenses
- Dust and Moisture Resistant Construction
- Extends the Master Lens Focal Length by 2x
- Minimum Loss of Lens Performance
- Reduces Inner Reflection for Higher Image Quality
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The effective aperture of the lens is increased by one or two stops respectively. Autofocusing does not operate if the effective maximum aperture is greater than f/5.6 (greater than f/8 on the EOS 1V and EOS 3)....
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Top Customer Reviews
Canon 100-400mm f4L = around 4x the cost of the converter alone
Canon 70-200mm F2.8L + the extender = 140-400mm f5.6 for 1/4 the cost (assuming you already have the 70-200)
Which should you do? That really depends on how often you will use that longer focal length - use it a lot and the extra investment in the lens will pay off; use it occasionally and that's quite a bit of money saved. Personally I would use a 100-400mm rarely so can't justify the expense nor the weight of carrying it around. The extender gives me an extra lens while taking minimal space.
You get what you pay for. You will lose two stops in speed, you will lose some image quality and, depending on the lens you connect it to, you may lose some functionality. Make sure you check on the Canon website as to the lens compatibility. Finally, how much image quality is lost will depend on the camera body, more specifically the sensor size. A full frame sensor such as in the 5D Mk II will result in less deterioration than using it on an APS-C sensor like the 50D or 7D. This is because you are effectively using only a central portion of the lens surface.
Autofocus takes longer to lock but still very good.
Pictures slightly softer than normal
I do recommend.
The 1.4x works very well with the Canon 500mm f4 but I only use the 2x as a last resort for that record shot.I cannot seem to achieve the sharpness I need for bird photos with the 2x
Most Recent Customer Reviews
it does what it says on the tin, however returned the item as i shoot at distance and the autofocus does not work on this x2 converter, consequently manual focus is the way... Read morePublished on 12 July 2013 by PAUL DRANSFIELD
This 2X converter does what it says it will do. There is the additional weight to be considered as it does make the whole assembly require a monopod at least. Read morePublished on 9 Dec. 2012 by Edward
On a Canon 1D and with a very fast lens, 400mm f2.8, AF has packed-up its bags and gone home.
The 1.4x is of course much better. Read more
I orded the lens extender,late on a Sunday, Monday I was emailed advising dispatch,Tuesday my extender arrived. Read morePublished on 6 Oct. 2011 by Baz SAFC
I have just bought a Canon EOS with 2 different EF-S lenses. I thought about using a converter like this one, or a similar one from Kenko, but I understand they are not compatible... Read morePublished on 7 Jan. 2011 by Daffy