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Nikon AF-S Teleconverter TC-14E III 1.4X for Select AF-S Lens

Model #364805
  • $402.00

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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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Nikon's 1.4x teleconverter that keeps autofocus alive

The TC-14E III extends any compatible AF-S telephoto by 1.4x while costing only one stop of light. Pair it with a 500mm f/4 and you're shooting at 700mm f/5.6, still fast enough for autofocus to function on most Nikon bodies. That's the trade-off that makes this converter worth carrying: meaningful reach added without dropping into the aperture range where AF systems start struggling or giving up entirely.

The III designation reflects Nikon's third revision of this optical formula, refined to maintain image quality across the glass elements paired with it. Because it's locked to select AF-S lenses, you're working within a compatibility matrix that rewards Nikon shooters who've already invested in the longer prime and zoom lineup. If your bag includes something like the 300mm f/2.8 or 70-200mm f/2.8, this converter slots in as a legitimate reach extender than a desperation compromise.

Who It's For

Wildlife photographers working from fixed positions get 700mm or more from a 500mm prime while retaining autofocus for tracking moving subjects. Sports shooters covering sideline action can stretch a 300mm f/2.8 to 420mm f/4 without losing AF speed on fast-moving plays. Birders and nature photographers who need extra reach on tighter budgets get a proven optical path without buying a second long lens. Travel photographers carrying a single telephoto can dial in more compression on distant subjects without adding weight to the kit.

Key Features

  • 1.4x magnification factor for extended reach on AF-S telephotos
  • One-stop light reduction, preserving f/5.6 aperture on f/4 lenses
  • Maintains autofocus on compatible AF-S lenses
  • Third-generation optics refined for image quality across telephoto range
  • Nikon F AF-S mount only
  • Compact and lightweight design for field use

FAQ

Which Nikon lenses work with the TC-14E III?
Nikon's official compatibility list includes AF-S telephotos like the 300mm f/2.8, 500mm f/4, 600mm f/4, and 70-200mm f/2.8 VR II. Check Nikon's full matrix before pairing, since not every AF-S lens accepts teleconverters.
How much light do you lose when using this converter?
One full stop. A 500mm f/4 becomes 700mm f/5.6, which still allows autofocus on most Nikon bodies without dropping into manual focus territory.
Will autofocus still work with the TC-14E III attached?
Yes. That's the entire point of this converter. It maintains AF capability on compatible AF-S lenses, unlike older teleconverter designs that forced manual focus on shorter telephotos.
What's the difference between the TC-14E III and earlier versions?
The III is Nikon's third optical revision. The refinements improve image quality and compatibility across the range of AF-S telephotos it's designed to work with, though the core 1.4x magnification factor remains unchanged.
Can I stack two TC-14E III converters for 1.96x magnification?
Not with this model. Nikon's teleconverter design doesn't support stacking. Use a 2x converter if you need greater magnification.
What's the physical size and weight?
Nikon publishes the TC-14E III at roughly 3.2 inches long and 6.2 ounces. Light enough to carry as a backup reach option without noticeably impacting your kit.
Does this converter work on mirrorless Nikon cameras?
No. The TC-14E III is built for the Nikon F AF-S mount and AF-S lens ecosystem. Mirrorless Z-mount cameras require different optical designs.
SpecificationValue
MountNikon F (AF-S)
Magnification1.4x
Compatible LensesSelect Nikon AF-S Lenses

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 AF (pre-D), Nikon F Mount D Type, Nikon F Mount G Type, Nikon F Mount E Type