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Sigma APO Teleconverter 2x EX DG for Canon Mount Lenses

3.9 out of 5 stars 111 customer reviews
| 78 answered questions

Price: $299.00 & FREE Shipping. Details
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Canon Mount Lenses
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  • Lens Construction: 6 Elements in 5 Groups.
  • Teleconverter works with select Sigma lenses on Canon Digital SLR camera bodies only.
  • Increases the minimum and maximum focal length by the power of 2.0x.
  • Multi layer lens coating reduces flare and ghosting.
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$299.00 & FREE Shipping. Details Only 7 left in stock (more on the way). Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Sigma APO Teleconverter 2x EX DG for Canon Mount Lenses
  • +
  • Sigma 150-500mm f/5-6.3 Auto Focus APO DG OS HSM Telephoto Zoom Lens for Canon Digital SLR Cameras
  • +
  • Zeikos ZE-UV86 86mm Multi-Coated UV Filter
Total price: $1,381.99
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This item: Sigma APO Teleconverter 2x EX DG for Canon Mount Lenses
Customer Rating 4 out of 5 stars (111) 4 out of 5 stars (458) 3 out of 5 stars (88) 5 out of 5 stars (85)
Price $299.00 $1,069.00 $249.00 $989.00
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By Amazon.com Roberts LP Amazon.com Amazon.com
Compatible Mountings Canon EOS Canon EF Canon EF,Canon EF-S Canon EF
Dimensions 2.72 inches x 2.05 inches x 2.72 inches 3.74 inches x 9.92 inches x 3.74 inches 2.72 inches x 0.79 inches x 2.72 inches 4.1 inches x 10.2 inches x 4.1 inches
Item Weight 0.52 pounds 3.92 pounds 0.32 pounds 6 pounds
Lens Teleconverter Zoom lens Teleconverter medium-telephoto
Maximum Aperture 5.6 5 2.8 5 f
Max Focal Length 400 mm 500 mm 420 mm 600
Min Aperture Information not provided 28 Information not provided 6.3
Min Focal Length 70 mm 150 mm 70 mm 150
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Product Description

Style: Canon Mount Lenses

Product Description

Lens Construction: 6 Elements in 5 Groups. Teleconverter works with select Sigma lenses on Canon Digital SLR camera bodies only. Increases the minimum and maximum focal length by the power of 2.0x. Multi layer lens coating reduces flare and ghosting.

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The Sigma APO Teleconverter 2x EX DG for Canon Digital SLR Cameras is a dedicated APO teleconverter that can be mounted between select lenses and the camera body to increase the focal length by the power of two. The multi-layer coating reduces flare and ghosting, which is a common problem with digital cameras. The lens also offers maximum magnification without any variation in the minimum focusing distance. Compact and lightweight, this teleconverter can convert your lenses into longer focal-length lenses, so you don't have to do a lot of unnecessary footwork. A case for the lens is included.

Product Information

Style:Canon Mount Lenses
Product Dimensions 2 x 2.7 x 2.7 inches
Item Weight 8.3 ounces
Shipping Weight 13.6 ounces (View shipping rates and policies)
ASIN B000CD8BIS
Item model number 876101
Customer Reviews
3.9 out of 5 stars 111 customer reviews

3.9 out of 5 stars
Best Sellers Rank #296 in Camera & Photo > Camera & Photo Accessories > Lens Accessories > Adapters & Converters
#961 in Camera & Photo > Lenses > Camera Lenses > Digital Camera Lenses
Date first available at Amazon.com October 2, 2001

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Read about our customers' top-rated lenses and cameras on our review pages: Lenses, Digital SLR Cameras, Compact System Cameras

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Customer Reviews

Top Customer Reviews

By T. Spencer on February 16, 2007
Style Name: Nikon Mount Lenses Verified Purchase
After reading the two reviews above, I was somewhat baffled. If you do any research on this product, you will find it clearly is made only for use with Sigma lenses, not Nikon lenses. The instruction manual that comes with the converter even lists which specific Sigma lenses to use. If you want a converter for Nikon lenses, buy the Nikon TC-20E (retails for more than twice the Sigma). Of course the quality of this product is poor when using a Nikon lens! I have a Sigma 70-200 zoom and it works beautifully; it is well worth the price.
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Style Name: Canon Mount Lenses
This review concerns the Canon-compatible converter. First, to set things straight: this TC that I am reviewing is intended for only Canon cameras, and for Sigma lenses that mount on a Canon camera. Anything else, you're taking your chances (Nikonians, you have your own mount, so disregard that). Second, there are optical laws that invariably predict a 2-stop decrease in the amount of light hitting the sensor. And finally, glass, no matter which brand or how many exotic elements in it, has undesirable characteristics and you will always lose some amount of clarity, saturation and perceived quality (how much varies from lens to lens and eye to eye).

Now that those fundamentals are out of the way, the results and recommendations. I took several photos using this TC mounted on my Sigma 70-200/2.8 and my Sigma 150-500/5.6~6.3. I also attempted to mount my Canon 28-70/2.8L on it, but the fit did not work (it scrapes and sticks and will not lock into place), and thus I believe they are incompatible. I did not test it with my Sigma 10-20/4.5~5.6 for obvious reasons.

AF is maintained throughout the entire range of the 70-200/2.8, as advertised in Sigma's compatibility chart. MF is engaged electronically for the entire range on the 150-500/5.6~6.3, again per the chart. AF through the 70-200 is solid, accurate, and has no degradation of speed. MF through the 150-500 @ 500 is, as one should understand, a touchy process, though it's aided considerably by the optical stabilization function.

Image quality @ 500mm (really, 1000mm) is not spectacular (though what does one expect, given a maximum aperture of about f/12.9). I didn't expect wonders but I had hopes of better. Some of this is inevitably due to my challenge in focusing, which is difficult without a split-prism finder.
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8 Comments 116 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Style Name: Nikon Mount Lenses Verified Purchase
First let me just say that I am NOT a pixel peeper. I am a professional photographer that realized, after years, that my clients are more concerned with the content of a photo than if it's a little soft. I have sold 16x24 prints even after pointing out to the client that it is not tack sharp. With that in mind I had reasonable expectations for this 2x teleconverter. I shoot a Sigma 70-200 f2.8 lens and wanted the teleconverter to get some more reach for recreational wildlife photography. I did not expect it to perform like a dedicated $1700 400mm telephoto lens. I figured it would be a little soft. The converter was compatible with the 70-200 and autofocus was fast.

After shooting with the teleconverter for 3 weeks I decided to send it back. I REALLY wanted it to work. The images were unusable for me. Like I said, I'm not a pixel peeper that obsesses over tack sharp images. Even my wife (a non photographer) asked by the images were blurry. I thought maybe it was my technique. So I mounted it on tripod, in the middle of the day with a fast shutter speed just to see if I could get something that was sharp. No matter what I did I got really soft images with what looked like a dreamy blur to them (think cheesy 1980s portraits) and color fringing.

I love Sigma glass. Its high quality, professional level equipment that will stand up to professional abuse. I shoot the Sigma 70-200mm 2.8, 18-50mm 2.8 and the 30mm 1.4. Amazing glass at a fraction of the cost as Nikon or Canon. But this 2x converter does not hang with the rest of them. Maybe I just got a bad copy but it sounds like others have had the same experience. Guess I'll just need to save up for the big boy: Sigma 50-500mm.

Hope this helps.
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Style Name: Canon Mount Lenses Verified Purchase
I bought this product primarily for use with my canon mount Sigma 2.8 70-200. So far it has performed exactly as it should. I havent tried to mount it on any of my other lenses, but according to sigma's website, it is built for use specifically with sigma lenses, which makes perfect sense. Obviously the 2x extender takes you down to 5.6, but to make a 200mm lens a 400mm is pretty well worth it in my opinion, though shooting a football game under low light wouldnt really be an option with the 5.6 aperture, any other decently well lit situations would work well with this extender. The autofocus seems to be working perfectly, as if the extender is not even there when using my Sigma 2.8 70-200. This product does exactly what it is supposed to do and is an awesome edition to any sigma lens setup.
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Style Name: Nikon Mount Lenses
I got this 2x converter to match the Sigma 70/200 2.8 lens. I have shot around 100 pics with this set up and have been very pleased with the results. I have shot wildlife to school track meets.
The only reason I couldn't give this converter a perfect mark is I can't use it with my other Nikon lens.
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