Nikon AF-S Teleconverter TC-20E III 2× Aspherical (Nikon F-Mount) — w/ Front + Rear Caps
 
Double your reach without changing lenses
The Nikon TC-20E III is Nikon’s pro-grade 2× teleconverter built for compatible AF-S / AF-I telephoto lenses. It’s a killer add-on for wildlife, sports, and outdoor work when you need extra reach fast—turning a 70–200mm f/2.8 into a 140–400mm f/5.6, or a 300mm f/2.8 into a 600mm f/5.6. The TC-20E III uses an advanced optical design (including an aspherical element) to help preserve sharpness and control aberrations compared to older 2× converters.
 
Condition:
Excellent overall. Glass appears clean and clear with no scratches, haze, or fungus noted, and the body shows only light cosmetic handling wear. Fully functional—electronic contacts are clean, and it communicates properly with compatible lenses/cameras.
 
Includes:
Nikon AF-S Teleconverter TC-20E III (2×)
Front cap (gray) + rear cap (black)
Not included: box, pouch/case, manuals, or any other accessories
 
Key Features:
2.0× magnification (doubles effective focal length)
Aspherical element to help maintain image quality
Optical design: 7 elements in 5 groups
Designed for select Nikon AF-S / AF-I telephoto lenses (common pairings include many f/2.8 primes and the 70–200mm f/2.8)
Maintains autofocus with many f/2.8 lenses (becomes f/5.6 effective)
Nikon build quality with solid mounting and reliable electronic pass-through
 
Why Buy This Teleconverter?
Get significantly more reach for wildlife/sports without upgrading to a longer lens
Pairs especially well with fast telephotos (f/2.8 class)
Compact and easy to keep in a camera bag as a “reach upgrade” on demand
 
Frequently Asked Questions:
Will it work with my Nikon 70–200mm f/2.8?
Yes, on compatible versions, it converts to 140–400mm f/5.6 and typically maintains AF.
Does it work with f/4 or slower lenses?
It may mount on some lenses, but autofocus performance depends on the lens + camera body (since the effective max aperture becomes smaller). Many setups may lose AF once you go beyond f/5.6.
Is this compatible with Nikon Z cameras?
Yes, with an FTZ adapter and a compatible Nikon F-mount lens (FTZ not included).
What’s included?
Teleconverter plus front and rear caps only—no box or pouch.