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Mel Pierce Camera
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Comments : Good, efficient service / 2010-09-03T20:54+0000
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J&R Music and Computer World
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Adorama Camera
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DBROTH
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OneCall
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17th Street Photo
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Beach Camera
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Norman Camera & Video
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Product Description
Canon 2x EF II Extender TeleConverter Lens USA
Amazon.com Product DescriptionDesigned 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
Product Details
| | Categories | Description | | Binding | Electronics | | Brand | Canon | | EAN | 0013803001808 | | Feature | Telephoto extender designed to double Canon EF lens focal length | | Feature | Ideal for shooting close-ups from a distance at sporting events | | Feature | Weather-resistant and anti-reflective internal construction | | Feature | Maintains autofocus with any EOD body with f/2.8 or faster aperture | | Feature | Measures 2.8 inches in diameter and 2.3 inches long; weighs 9.3 ounces | | IsAutographed | 0 | | IsMemorabilia | 0 | | ItemDimensions | Height : 350
Length : 530
Weight : 58
Width : 380
| | Label | Canon | | LensType | Converter | | Manufacturer | Canon | | Model | 6864A004 | | MPN | 6864A004 | | PackageDimensions | Height : 370
Length : 540
Weight : 80
Width : 380
| | PackageQuantity | 1 | | ProductGroup | Photography | | ProductTypeName | CAMERA_LENSES | | Publisher | Canon | | SKU | CA2XAF2U | | Studio | Canon | | Title | Canon EF 2X II Extender Telephoto Accessory | | UPC | 013803001808 |
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Customer Reviews
 | | Canon's Doubler | August - 21 - 2010 | | |
by R. Sauder (Amateur Photographer) from Honolulu, HI USA
The Canon EF 2X II Extender I used on my Canon EF 70-200mm f/2.8L II IS USM Telephoto Zoom Lens to give me a 140-400mm f/5.6L II IS USM Telephoto Zoom Lens. Of course it's slower with the F stop, but for now it saves me, till I can buy the Canon EF 400mm f/2.8L IS USM Super Telephoto Lens.
| | | | | | Well worth the purchase if you understand the trade offs | July - 07 - 2010 | | |
by Richard Cabrera (richcz3) from Los Angeles
I've used the EF 2X II Extender for 9 months now and can say it has met my needs admirably.
I say this having researched, knowing the benefits and short comings of using it before I made my purchase.
I use it primarily in combination with my EF 100-400mm IS lens for use on birds and outdoor events. I have shots of birds I couldn't have captured had I been required to close in on the subject. It's also been key in closing the gap where I would not be able to cross because of an area being otherwise inaccessible - not worth losing gear or limbs to get a closer vantage point.
Now the downside with using the EF 2X II are no Auto Focus and added softness in some shots and of course the increase in F stops. Even in shots with high contrast lighting and a stationary subject, softness in image quality can be an issue. When using it on a mobile subject, I end up with quite a number of shots that I will not use. Between adjusting for focus and the inherent soft IQ, you'll definitely need to weigh its use.
A work around for not having Auto Focus through the viewfinder is to use a Hoodman or other device to shield the LCD and shoot in Live View. Using my 7D, I can get AF confirmation and take the shot.
If you are good at post processing your images, one could argue not using the extender and simply enlarge an image matching the IQ softness the extender adds. My preference is to go with the optics vs. the software algorithm.
| | | | | | great tool to reach out and get that shot | May - 24 - 2010 | | | 
by Rodrigo Zurita
great tool to add to L series lenses. Softens edges a bit and has some trouble focusing. Used mine on my canon 70-200 is 2.8 lens. Nice addition that is not too expensive.
| | | | | | You'll get your money's worth!! | May - 01 - 2010 | | |
by Casual Guru from Minneapolis, MN
I bought this 2x TC for some extra reach on my 300 f/4 IS and was very happy with the results from a recent vacation. I practiced with it for a bit before using it for the first time where it would count and I am glad that I did - 600 mm is very different than 300mm. I still had about a 60% keeper rate even with IS at f/8 or better on a 1DmkIII - but I got the shots I wanted. I was hesitant to buy this since I had read so many things about how it really didn't hold up well IQ-wise (specifically, that it was far worse than the Canon 1.4x TC) but I was pleased with the shots where I did what I was supposed to!! All my shots were handheld so if there was an OOF image - it was my fault.
I walked away with some very clean, and very sharp images, so I give this a HIGHLY RECOMMENDED.
| | | | | | Quality way to double your focal length | April - 27 - 2010 | | |
by Pioneer Pix from Carrollton, TX USA
The Canon EF 2X II telephoto extender is a reasonably inexpensive way to double the focal length of some of the Canon lenses. There are a few pro's and con's when considering going this route. The image quality of this extender is extremely good and maintains the image quality of the lens that is attached to. I found it to be far better than other lessor cost extenders.
There are a couple of caveats to be aware of before purchasing this extender. First, it is NOT compatible with ALL Canon lenses. Check the Canon site for the specs on this extender and the list of compatible lenses. It is mainly a physical problem of the front element of the extender lens sticking out too far to physically connect with some lenses because their rear element is too far back and it clashes (or crashes) with the extender. Secondly, be aware that a 2x extender will cause a 4x light loss through the optical system (i.e. 2 f-stops slower). This is true of any extender - it's the law of optical physics. Unless your main lens is better than F5.6, the camera will not have enough light to autofocus, so be prepared to manually focus your camera when using a 2x extender.
That being said and all of these conditions being understood, the Canon EF 2X II extender is a great way to double the power of your telephoto lens.
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