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  • Tamron Auto Focus 2x Teleconverter for Nikon Mount Lenses (Model 230FFN)
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Tamron Auto Focus 2x Teleconverter for Nikon Mount Lenses (Model 230FFN)

by Tamron
42 customer reviews
| 37 answered questions

Price: $189.00 & FREE Shipping. Details
Only 7 left in stock (more on the way).
Ships from and sold by Amazon.com. Gift-wrap available.
  • Increases focal length from same camera position by 2x
  • Powerful and creative options for your telephoto photography
  • Fits easily between lens and camera body
  • Includes carry case
  • For use with Nikon Digital SLR cameras
6 new from $189.00 9 used from $145.00
Important Warranty Information: By purchasing Tamron products from an authorized dealer, you can ensure the quality of the product, which will be also covered by Tamron USA's Six-Year Limited Warranty, the only warranty accepted by Tamron USA, Inc. in the USA as of October 1, 2007. In addition, only Tamron products purchased from Amazon.com or another authorized Tamron dealer qualify for Tamron's mail-in rebate program. To see a full list of authorized dealers visit the Tamron website at http://www.tamron-usa.com/dealers.php.

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$189.00 & 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

Tamron Auto Focus 2x Teleconverter for Nikon Mount Lenses (Model 230FFN) + Xit XTETN Auto Focus Macro Extension Tube Set for Nikon SLR Cameras (Black)
Price for both: $228.35

Buy the selected items together

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Technical Details


Product Description

A Teleconverter is a great way to extend the focal length of your lens. This converter will extend the focal length of your lens by 2x giving more magnification.

Product Details

  • Product Dimensions: 2 x 2.6 x 1 inches ; 11.2 ounces
  • Shipping Weight: 8.8 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B0000ZJDXA
  • Item model number: AF20N-700
  • Average Customer Review: 3.6 out of 5 stars  See all reviews (42 customer reviews)
  • Amazon Best Sellers Rank:
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.
  • Date first available at Amazon.com: April 15, 2004

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

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

49 of 52 people found the following review helpful By AD on March 27, 2008
This is a very good solution if u dont want to spend $$ for long telephoto. This can be used on Digital SLR I use it with D80 one of the reviewer has mentioned mumbo jumbo written by Tamron which they have to because this is not designed for digital camera but that doesnt mean it can not be used. AF will work but will be slow and hunt so be prepared to do manual focusing. I use it for nature and wildlife photography and has clicked decent quality pictures with my skill level. I use it with Tamron 75-300 mm and this teleconverter makes it 600mm pretty decent range for the purpose of wildlife photography. It will slow down lens by 2 f stops so u will need very low shutter speeds or pretty good light.

In short it can be used effectively if you really know what you are doing and obviously something like this is difficult to use at 600 mm handheld so more often than not you will have to use tripod but when you compare the cost advantage it is a no brainer for a newbie or a hobbyist not wanting to spend too much.

4 starts because it is not a perfect solution but it is not even supposed to be so read it as 5 stars if you understand the limitations of this thing.
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25 of 25 people found the following review helpful By B. L. Hutchinson on February 6, 2009
Verified Purchase
I use this 2x converter with a Nikon D-50, paired with the Nikkor 55-200mm lens made for that camera series, with 52mm lens diameter. Most notable pro -- This pair gives me 400mm zoom -- a single 400mm lens would cost $1000 and up. If you are trying to go from 200-400mm on a budget, i would recommend this lens. If you are doubling a 55mm lens, I'd recommend buying better glass. Important -- 1. you must shoot with a tripod, this doubler does not work with auto focus, and you can't possibly steady yourself enough to get tack sharp image. (Probably goes without saying on a long lens). 2. Practice a lot with focus before you go on vacation or where ever. The manual focus on my camera combination requires a very, very light touch to get tack sharp, especially with the depth of field that you will lose in f-stop. Best for well lighted situations.
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26 of 26 people found the following review helpful By iridiobob on December 31, 2012
alot of people say the auto focus doesnt work i have a d5100 this works great
with my 55-300 nikor i shot inside and was able to use auto focus and on a cloudy day too
alot better than spending $4,000 for a nikor lens
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25 of 26 people found the following review helpful By Garrick Morgenweck on December 1, 2012
Got this as an early Christmas gift. I primarily bought it for use with my Nikkor 70-300 f/3.5-5.6 for wildlife. It works really well if you use good long lens technique. It is not going to work for handholding period. Any movement is amplified twice as much as it is trying to handhold at 300mm, but thats to be expected. Anytime you deal with long focal lengths you need a really good heavy and sturdy tripod because even the littlest movement (mirror shake for instance) is amplified ten fold.

Also be aware that when you use anything between your lens and and the camera you lose light from the extra lenses and distance. You'll lose about 1-2 stops of light with this. Once again to be expected and once again should reinforce the need for a tripod, mirror up, and a remote trigger for long shots.

One more thing about use. You are better off using Manual Focus, especially at long lengths. Your camera will hunt longer and take more time to catch focus because of the new focal length and on some lenses will never grab focus. Its one of the disadvantages of using a Teleconverter.

All that being said, if you use it within the general limits of such devices it is really nice! I effectively boosted my zoom to 600mm without having to spend thousands on a new lens. I haven't noticed any Chromatic aberration added to any shots. If I was going to see it I most certainly would have when photographing the full moon. Also no added Distortion, but it will magnify any defects in the lens by 2x just as it will the image. Garbage in - Garbage out so keep working with your best glass.

I am giving it a full 5 stars. These devices requires some advanced technical skill to get good sharp images, but is well worth it.
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17 of 17 people found the following review helpful By jet on June 29, 2011
Verified Purchase
Product is great with Tamron lenses as well as Nikkor...have not tried it yet with Sigma lenses.
The Good.....my 300mm and 250mm Tamron lenses double the distance.
The Bad......My D3100 and D70 are having difficulty in the AF...have to swith the Lens
to manual especially at maximum distance.
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8 of 8 people found the following review helpful By Pierre Tinel on February 1, 2013
Verified Purchase
Well I bought that knowing that i would rework each photo and use only the center of them as I suspected that the corners would be horrible in quality and definition. I knew I would have to compromise on speed and would never use that without a tripod. I also understood that the camera would not communicate with the lens with this dobler in between and that okay as I use only manual for my shoots. Therefore I was not surprise and not disappointed... It is exactly all that
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19 of 24 people found the following review helpful By Patty Bee on May 1, 2012
Verified Purchase
When I read the instructions for this teleconverter, it indicated that it was designed only for Tamron lenses, and so I was concerned that it wouldn't work with my Nikon lenses. However, it did. It was a tight fit, but not a problem. The teleconverter worked as I expected it to. With my 70-300 lens, I was able to get 600mm (with the crop factor on my camera, 900mm!). However, when I viewed my images on my computer there was considerable fringing on the images. I had taken shots of birds on a backyard feeder, and all around the edges of the birds and the curve of the feeder pole, which had blue sky as background, there was a dark blue edge. This is not acceptable, and for that reason I returned the product. I have no idea if this would be more useful with a more expensive lens than I have, or with Tamron lenses. For my use, it was not good. Amazon's return policy has been superior.
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Tamron Auto Focus 2x Teleconverter for Nikon Mount Lenses (Model 230FFN)
This item: Tamron Auto Focus 2x Teleconverter for Nikon Mount Lenses (Model 230FFN)
Price: $189.00
Ships from and sold by Amazon.com