Sigma Photo 2.0X Teleconverter

Telephoto range extender for select Sigma Photo lenses (Nikon mount)

Item #: 366876NA

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This lightweight, convenient teleconverter for select Sigma Photo lenses increases their reach by 2.0X. Special coatings minimize flaring, ghosting, and internal reflections.

Is your Sigma lens compatible?

Please check this compatibility table from the Sigma Photo website to make sure your lens works with this teleconverter. If your camera or lens is APS-C, please also consult this APS-C compatibility table.

Product Highlights:

  • designed for Nikon mount lenses
  • extends reach of select Sigma Photo lenses by 2.0X
  • multi-layer coating reduces ghosting and flaring
  • warranty: 4 years
  • Our 60-day money-back guarantee
  • length: 2-7/16"
  • diameter: 2-3/4"
  • weight: 8.3 ounces
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Hands-on research

What's in the box?

Download owner's manual

  • APO Teleconverter 2x DG for Nikon
  • Body cap
  • Rear lens cap
  • Soft zippered case
  • Instructions
  • Warranty card

Features and Specs

Brand Compatibility Nikon
Image Stabilization No
Focal Length 2x
Maximum Aperture N/A
Weight 8.3 ounces
Parts Warranty 4 Years
Labor Warranty 4 Years

Product Research


Overview: The Sigma APO Tele Converter 2x is a fast and easy way to double the focal length of your lenses. This high-quality tele converter is designed to take full advantage of the optical performance of the master lenses for which it can be used. The 2x Tele Converter has the Nikon bayonet mount, and comes with a soft, zippered case.

Compatibility: The Sigma APO Tele Converter 2x is compatible only with the following lenses:

  • Sigma APO Macro180mm F3.5 EX IF HSM
  • Sigma APO 300mm F2.8
  • Sigma APO 300mm F2.8 EX HSM*
  • Sigma APO Tele Macro 300mm F4
  • Sigma APO Tele Macro 300mm F4 HSM
  • Sigma APO Tele Macro 400mm F5.6
  • Sigma APO Tele Macro 400mm F5.6 HSM
  • Sigma APO 500mm F4.5
  • Sigma APO 500mm F4.5 EX HSM
  • Sigma APO 800mm F5.6
  • Sigma APO 800mm F5.6 EX HSM
  • Sigma APO 1000mm F8
  • Sigma APO 50-500mm F4-6.3 EX RF HSM
  • Sigma APO 70-200mm F2.8 EX HSM*
  • Sigma APO 70-210mm F2.8
*The lenses marked with an asterisk (*) will retain auto focus operation when used with the APO Tele Converter 2x. All of the others can only be used in manual focus mode.

Exposure: Using the APO Tele Converter 2x will decrease the effective aperture by two F-stops. Exposure can still be determined in the same manner as when using the master lens without the tele converter.


  • Lens Construction: 6 elements in 5 groups
  • Focal Length: 2x that of the master lens
  • Aperture Coupling Range: F2.8-32
  • Reproduction Ratio: 2x that of the master lens
  • Dimensions: Diameter=2.697", Length=2.385" (2.853" w/caps)
  • Weight: 8.3 ounces

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