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Nikon AF-S Teleconverter TC-20E III

Teleconverter for compatible Nikon autofocus lenses

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  • Nikon AF-S Teleconverter TC-20E III

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Our take on the Nikon AF-S Teleconverter TC-20E III

by Dave Bar
Nikon

Double your Nikon lens' telephoto power

Sometimes you need more reach than your lens can deliver, but buying and toting a longer lens may not be an option. That's where Nikon's TC-20E III teleconverter comes in. Attached between your Nikon camera's body and a compatible Nikon lens, it effectively doubles the lens's focal length without adding significant bulk. For example, using the converter with Nikon's AF-S 70-200mm f/2.8 ED VR II lens increases its zoom range to 140-400mm on a full frame (FX) SLR such as Nikon's D610 (or a whopping  210-600mm on a DX cam like the D7100). And the TC-20E III's high-quality optics maintain your lens's sharpness, while its built-in Silent Wave Motor allows most lenses to continue autofocusing normally. It's perfect for shooting outdoor sports and wildlife scenes where the added telephoto capability can really come in handy.

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Highlights:

  • designed exclusively for use with Nikon AF-S and AF-I lenses
  • provides 2X optical magnification for greater telephoto reach
  • compatible formats: Nikon FX, DX, FX in DX Crop Mode, and 35mm film
  • light loss: 2 f-stops
  • built-in Silent Wave Motor allows autofocusing with many Nikon lenses
  • supports metering and auto exposure functions
  • supports the VR and VR II function found on many Nikon lenses
  • construction: 7 lens elements in 5 groups
  • aspherical lens element virtually eliminates coma and other aberrations, even when shooting at wide apertures
  • Nikon Integrated Coating (IC) enhances light transmission efficiency, improves color consistency and reduces lens flare
  • includes front and rear caps, soft case
  • weight: 11.6 ounces
  • teleconverter is 2-5/8" in diameter, 2-3/8" overall length (1-15/16" long extension from camera's lens mounting flange)
  • warranty: 1 year
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Product Research
What's in the box?

Download owner's manual

  • 2x AF-S Optical Teleconverter (TC-20E III)
  • BF-3B Front cap (installed)
  • LF-4 Rear cap (installed)
  • CL-017 Soft case
  • User's Manual
  • Warranty Programs sheet

Our Product Research Team

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Features

Overview: The AF-S Teleconverter TC-20E III is a precision optical accessory, mounted between the camera body and the lens. It has a 2.0x optical conversion factor, which effectively doubles the focal length of select compatible Nikkor lenses. It is ideal for sports photography, wildlife photography, surveillance, and more. The TC-20E III has the standard Nikon F-bayonet mount, and is compatible with FX, DX, FX in DX crop mode, and 35mm film formats. A list of compatible lenses can be found below.

Nikon Integrated Coating (IC): The TC-20E III has Nikon's integrated coating which enhances light transmission efficiency, improves color consistency, and reduces flare.

Autofocus: The TC-20E III allows auto focusing with most compatible AF-S lenses, many with manual or auto priority. With some compatible lenses, though, auto focusing is not possible. Focus assist may also be available in most situations.

Lens Construction: The teleconverter has 7 lens elements in 5 groups, including 1 aspherical lens element to eliminate coma and other aberrations, especially at wide apertures. It is optimized for use with FX and DX digital SLRs.

Exposure: The use of this teleconverter decreases the effective aperture of the attached lens by two stops. With most AI-type cameras, exposure is determined in the same manner as using the prime lens only. Exposure cannot be determined with the G-type lens. For non-AI-type cameras, you will need to perform the stop-down method to determine the proper exposure.

Compatible Lenses: The AF-S Teleconverter TC-20E III is compatible with the following lenses:

  • Compatible with no limitations:
    • AF-S VR NIKKOR 200mm f/2G IF-ED
    • AF-S VR NIKKOR 200mm f/2G IF-ED II
    • AF-S NIKKOR 300mm f/2.8G ED VR II
    • AF-S VR NIKKOR 300mm f/2.8G IF-ED
    • AF-S NIKKOR 300mm f/2.8G IF-ED II
    • AF-S NIKKOR 300mm f/2.8G IF-ED
    • AF-I NIKKOR 300mm f/2.8D IF-ED
    • AF-S NIKKOR 400mm f/2.8G ED VR
    • AF-S NIKKOR 400mm f/2.8D IF-ED II
    • AF-S NIKKOR 400mm f/2.8D IF-ED
    • AF-I NIKKOR 400mm f/2.8D IF-ED
    • AF-S NIKKOR 70-200mm f/2.8G ED VR II
    • AF-S VR Zoom-NIKKOR 70-200mm f/2.8G IF-ED
    • AF-S Zoom-NIKKOR 80-200mm f/2.8D IF-ED
    • AF-S NIKKOR 80-400mm f/4.5-5.6 ED VRII
  • Compatible, but AutoFocus not possible:
    • AF-S VR Micro-NIKKOR 105mm f/2.8G IF-ED
    • AF-S NIKKOR 300mm f/4D IF-ED
    • AF-S NIKKOR 500mm f/4G ED VR
    • AF-S NIKKOR 500mm f/4D IF-ED II
    • AF-S NIKKOR 500mm f/4D IF-ED
    • AF-I NIKKOR 500mm f/4D IF-ED
    • AF-S NIKKOR 600mm f/4G ED VR
    • AF-S NIKKOR 600mm f/4D IF-ED II
    • AF-S NIKKOR 600mm f/4D IF-ED
    • AF-I NIKKOR 600mm f/4D IF-ED
    • AF-S NIKKOR 800mm f/5.6E ED FL
    • AF-S VR Zoom-NIKKOR 200-400mm f/4G IF-ED
    • AF-S Zoom-NIKKOR 200-400mm f/4G ED VR II
 
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