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Nikon AF-I Teleconverter TC-20E 2X for Select AF-I, AF-S Lenses

Model #217337
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  • $90.00

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New in box complete with manufacturer's USA warranty. Not previously owned or used.
Essentially new with no signs of use. “Open box.” In manufacturer's packaging with original accessories and instructions. 180-day warranty.
Barely used with virtually no traces of wear. Only the closest inspections will reveal slight use. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Lightly used with limited signs of wear. Exceptionally nice but may have slight wear on finish visible. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Noticeably used with average signs of wear. Shows moderate wear for the age of the item, with the possibility of blemishes and/or minimal dings. Lens glass may have average dust and zoom/focus ring tension may have slight looseness or tightness overall, but will not affect picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Frequently used with above-average wear. May have dents, dings, or finish loss. Lens glass may have small scratches, dust, and blemishes, and zoom/focus ring tension may have moderate looseness or tightness overall, but should not affect picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Heavily used with extensive visible wear. Equipment is rough, with multiple impressions in the finish, excessive finish loss and brassing. Glass will have marks, fungus and/or heavy/cloudy haze which could affect picture quality. Accessories usually not included, unless noted in listing. Not covered under KEH warranty.
Non-functional or damaged. Equipment will not work. Usable for parts. Not covered under KEH warranty and non-returnable.
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$90.00
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Nikon TC-20E 2X teleconverter doubles reach on AF-I and AF-S glass

The TC-20E drops onto select Nikon AF-I and AF-S F-mount lenses and doubles their focal length without breaking autofocus. That 2x factor turns a 300mm prime into a 600mm telephoto, or pushes a 400mm into 800mm territory, all while preserving the lens-to-camera communication that keeps AF operational. The cost is two stops of maximum aperture, which is the standard trade-off for any 2x converter and something to plan around when shooting in lower light or pushing shutter speeds.

Because the TC-20E only works with select AF-I and AF-S lenses, check compatibility before buying. When you're running a supported pairing, the optical and mechanical interface is clean, and you avoid the focus hunting and stopped-down shooting that plague third-party solutions. For photographers who already own a long Nikon prime and want to extend its range without purchasing a second lens, this converter is a straightforward, proven solution.

Who It's For

Wildlife photographers shooting with a supported 300mm or 400mm AF-S prime will get the most from this converter, doubling reach without carrying a second body or lens. Sports shooters working from fixed positions can gain the extra compression a 2x factor provides when action is happening at distance. Bird photographers benefit directly from the maintained autofocus capability, since manual-only operation at long focal lengths is rarely practical. Travel photographers committed to the Nikon F system who want to pack light but still access extreme telephoto range will find the TC-20E a compact, purposeful addition to their kit.

Key Features

  • 2x magnification factor extends focal length on compatible lenses
  • Nikon F mount for AF-I and AF-S compatibility
  • Maintains autofocus with select Nikon AF-I and AF-S lenses
  • Two-stop aperture loss is standard teleconverter trade-off
  • Direct optical and mechanical interface with supported lenses

FAQ

Which Nikon lenses work with the TC-20E?
The TC-20E is compatible with select Nikon AF-I and AF-S F-mount lenses. Check Nikon's compatibility chart before purchasing, as not all AF-I and AF-S lenses support this converter.
How much does the TC-20E reduce maximum aperture?
The converter costs two stops of maximum aperture. A lens with f/4 maximum becomes f/8 when the TC-20E is attached.
Does the TC-20E maintain autofocus with compatible lenses?
Yes. With supported AF-I and AF-S lenses, autofocus remains fully operational and the converter preserves lens-to-camera communication.
Can I use the TC-20E on third-party lenses or older Nikon lenses?
No. The TC-20E is designed exclusively for select Nikon AF-I and AF-S lenses and will not function properly on other brands or older Nikon lens designs.
What focal length does a 300mm lens become with the TC-20E attached?
A 300mm lens becomes 600mm when the TC-20E is mounted, effectively doubling the focal length.
Is the TC-20E better than stacking teleconverters or using a third-party converter?
The TC-20E avoids focus hunting and the need to stop down aperture like third-party solutions require. Stacking converters degrades optical quality and loses AF capability on most lenses.
SpecificationValue
MountNikon F
Magnification2x
Compatible LensesSelect Nikon AF-I and AF-S lenses
Teleconverter Factor2x

This description was generated using AI based on KEH's internal product standards, product expertise, and knowing what customers care about most. While we strive for accuracy, details may vary by individual item.

Brand Name Nikon
Focus Type Autofocus (lens motor)
Lens Mount Nikon F Mount D Type, Nikon F Mount G Type