Product Description

The multi layer lens coating and lens design reduce flare and ghost, which is a common problem with digital cameras and also creates an optimum color balance through the entire zoom range.

Product Details

• Brand: Sigma
• Model: B000CDA7Y4
• Dimensions: .0 pounds

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

Amazon.com Product Description
The Sigma APO Teleconverter 2x EX DG for Nikon 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 2. 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.

Customer Reviews

Poor focus when used with Sigma 150-500mm Telephoto Zoom Lens
I bought this teleconverter to use with the Sigma 150-500mm f/5-6.3 AF APO DG OS HSM Telephoto Zoom Lens for Nikon Digital SLR Cameras. My intent was to use it for bird photography with my Nikon D200. However, after thorough testing in good light (Better Beamer, F11, 1/250, ISO 200), I was unable to get clear images (tried both auto and manual focus).

I returned both the telconverter and the Sigma 50-500mm.

Very pleased
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.

Sigma 2X EX DG APO Teleconverter for Nikon AF Cameras
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.