Canon EF 2X II Extender Telephoto Accessory
Outstanding optical performance that visually matches the images quality of the host lens / Provides 2-times Photo Magnification Lens construction - 7 elements / 5 groups Overall length - 56.5mm Max. diameter - 71.1mm Package includes Extender Cap, Lens Dust Cap E, Lens Case LP811
Amazon.com Product Description:
Designed to double the focal length of any compatible Canon EF lens, the Canon EF 2x II extender telephoto accessory is ideal for sporting events and nature photography. The lens boasts a new seven-element design, along with the same weather-resistant and anti-reflective internal construction as the companion EF 1.4x II extender. More significantly, the extender supports autofocus with any EOS body provided the lens has an f/2.8 or faster maximum aperture (the EF 2x II reduces effective aperture by two stops). The EF 2x II--which also maintains an EOS camera's Image Stabilization technology--carries a one-year warranty.
- Magnification: 2.0x
- Lens construction: 7 elements in 5 groups
- Dimensions: 2.8 inches in diameter and 2.3 inches long
- Weight: 9.3 ounces
Lowest New Price: USD 286.25
- Telephoto extender designed to double Canon EF lens focal length
- Ideal for shooting close-ups from a distance at sporting events
- Weather-resistant and anti-reflective internal construction
- Maintains autofocus with any EOD body with f/2.8 or faster aperture
- Measures 2.8 inches in diameter and 2.3 inches long; weighs 9.3 ounces
Model: 6864A004
Autofocus does not work with XTi body!
I did not find any information regarding the incompability between the Extender and my XTi body. According to email received from canon it really do not work.
Be careful before you buy it!
Will not work wih Telescope T-ring
This is not a complaint. But, the Extender will not work as a 'doubler' or Barlow to a telescope like the Meade LX200 series.
I can easily attach my Canon Rebel with a T-ring but the Extender seems to require a lens that it is compatable with. You can't go Camear/Extender/T-ring/Scope.
Canon never said or implied that it could so I am not complaining. It works great with all my Canon lens.
A great accessory.
It can allow for outstanding results otherwise unattainable without the really big budget glass. I use it exclusively on my 300mm 2.8L IS and couldn't be happier with the results. I also use that set-up nearly 100% of the time hand held for birds in flight/wildlife.
When all is said and done I'd have to say it comes close to the best 5 I've spent on photo related accessories.
Very Impressed
I was very impressed with this Canon 2x extender. I use it with my Canon 70-200 2.8 IS lens. I previously used a Kenko Pro 300 2x and it was OK but the Canon unit is significantly sharper. Autofocus is fast and accurate - I hardly know the extender is on the lens (other than the length and weight).
2wice the fun
Canon EF 2X II Extender Telephoto Accessory
I was completely blow away by the quality of the resultant images. ... Yes, I lost 2 f-stops, but I gained twice the reach of the telephoto, and a doubling of the macro. ... And I liked it. ... My 180 mm 1x macro is now a 360 mm 2x macro. ... Cool!
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