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Sigma APO Teleconverter 2x EX DG for Nikon Mount Lenses

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Sigma APO Teleconverter 2x EX DG for Nikon Mount Lenses

(33 customer reviews)

List Price:	$380.00
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SKU:

1712

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Features

Teleconverter lens for Nikon SLR cameras
Increases the focal length by the power of 2
Multi-layer lens coating and lens design reduces flare and ghosting
Includes lens case

Description

The dedicated APO teleconverter can be mounted between select lenses and the camera body to increase the focal length by the power of 2.0x. The new multi layer coating reduces flare and ghost, which is a common problem with digital cameras. They demonstrate best performance with DG series lenses. They also offer maximum photography magnification by 2.0 x, without any variation in the minimum focusing distance. Compact and lightweight, these teleconverter convert your lenses into longer focal-length lenses, so you don't have to do a lot of unnecessary footwork.

Product Details

Product Weight:	0.52 pounds
Package Length:	3.94 inches
Package Width:	3.86 inches
Package Height:	3.78 inches
Package Weight:	0.88 pounds
Average Customer Rating:	based on 33 reviews

Customer Reviews

Average Customer Review: 3.0

( 33 customer reviews )
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Most Helpful Customer Reviews

88 of 92 found the following review helpful:

Sigma 2X EX DG APO Teleconverter for Nikon AF Cameras Feb 16, 2007 By T. Spencer
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.

56 of 60 found the following review helpful:

Useful enhancement, within reason May 21, 2009 By Photoleif
First, to set things straight: this TC is intended for only Canon cameras, and for Sigma lenses that mount on a Canon camera. Anything else, you're taking your chances. 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. The image quality is still fairly bright and saturated, but somewhat noisy-looking. Exposure was accurate. I need to test on monochromatic surfaces to determine what's going on with the noise.

Tripod-mounting the camera, lens and TC for the 1000mm (500mm doubled) test shots produced the best results, improving further with MLU enabled and use of an IR remote. Image quality @ 400mm (200mm doubled) is acceptable and this should be the recommended pairing of lens and teleconverter (70-200/2.8 with this TC). This pairing results in a decent-quality 400/5.6 for well below the price of Canon's prime and zoom lenses in this range. I won't claim that the image quality is better; just, it's decent, and you save a lot of money.

Build quality of the TC is fine and nothing is worth further comment other than that it's a solid, well-built TC with multicoated elements.

I wavered between a 3-star and 4-star rating. I have owned two other TCs, and they were unquestionably 1-star at best. I went with four for this one because of its good performance with the 70-200/2.8, maintaining AF with that lens, and having pleasing build quality (I have no concerns about taking it out and using it frequently). I am however disappointed about the performance with the 150-500/4.5~5.6. I would give it a 3-star for its performance with the 150-500. I think it should at least attempt AF, and if the user has to give up and set it to MF, fine. Here, we don't even have that luxury, and there's no explanation on Sigma's website or the product literature. So, if you are considering this to get yourself a cheap 1000mm lens, be aware of the drawbacks (full-time MF, somewhat noisy images, and challenging focusing in even overcast light). If you're wanting to extend a 70-200, this is the sweet-spot.

24 of 26 found the following review helpful:

Very pleased May 02, 2008 By Ronnie Phipps "BigRPhoto"
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.

16 of 18 found the following review helpful:

Very Nice, and Useful Accessory Jun 02, 2008 By Tom "wanderlust"
overall, i like this teleconverter. I use this with the new sigma 70-200mm F2.8 II lens for Rebel XTi. the F-stop became 5.6 with teleconverter, but i get up to 400mm zoom, which makes quite a difference. While it's true that most of my pictures came out soft, but some pictures came out quite sharp- so it may just be me. there is some slight color distortion, but it's only more noticeable when you shoot macros.

i glad i got it. and it has allow me to extend my lens from 140-400mm, of which 200-400mm is a critical range for wildlife and sports.

Update: July, 08
Okay, after a couple months of using Sigma 70-200mm F2.8 EX II lens, I found out that the Macro function is almost useless because of its such poor quality (soft focus and CA)- so the F has to be 9 or greater...now when you add this Teleconverter your F number is going to be even higher (i found the sharpest image at F22!!).....lowest i try to get an usable image is around F15 or more. Now this is macro.

Just make sure you have plenty of light, and that the subject is far away and then this will be a great add-on for you.

UPDATE:
I originally bought this for my Sigma 70-200mm F2.8 Lens- and i really doesnt like its performance at the low F-stop (blurry, ca, and other problems), but i just got the Canon 70-200mm F2.8 IS lens (and yes, it's much better than the Sigma!), and is pleasantly surprised to find out that this teleconverter works with it! in fact, the pictures came out better than the Sigma lens- so I think the picture quality issue is because of the lens not because of this teleconverter.

overall, you're still going to get the best picture quality without this teleconverter, but with 2x and Canon, I think this will produce a better picture than any 70-300mm lens out there.

7 of 7 found the following review helpful:

Perfect addition to my slr setup Feb 05, 2011 By Brian Sevald "brian"
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.

See all 33 customer reviews on Amazon.com