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Nikon AF-S Teleconverter TC-17E II 1.7X for Select AF-I, AF-S Lenses

Model #217336
  • $120.00

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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 TC-17E II: 1.7x reach without a second lens bag

The TC-17E II sits at a useful middle ground in Nikon's teleconverter lineup. The 1.7x magnification factor turns a 300mm f/2.8 into a 510mm lens, or a 500mm f/4 into an 850mm f/6.7, without adding a separate prime to your kit. The aperture cost is 1.5 stops, which is the expected tradeoff for that kind of reach multiplication. Autofocus is preserved on compatible AF-I and AF-S lenses, so you're not giving up tracking capability in the field.

Nikon F-mount compatibility means this converter works within a well-established glass ecosystem. The TC-17E II pairs specifically with select AF-S and AF-I lenses, so matching it to the right host glass matters. Paired correctly, it earns its place in a bag where carrying multiple long primes isn't practical.

Who It's For

Wildlife photographers working at distance get meaningful reach extension from a 500mm or 600mm prime without the weight and cost of a dedicated 800mm lens. Sports shooters at mid-sized venues who need to tighten a frame from a fixed position will find the 1.7x factor covers gaps that a 1.4x converter leaves open. Travel photographers building a compact telephoto kit around one or two AF-S primes can use this converter to cover compressed focal lengths across different shooting situations without adding bulk.

Key Features

  • 1.7x magnification for extended reach without a second prime
  • Nikon F-mount design fits within established lens ecosystem
  • Preserves autofocus with compatible AF-I and AF-S lenses
  • 1.5-stop aperture reduction as expected tradeoff
  • Select Nikon AF-S and AF-I lens compatibility required

FAQ

Which Nikon lenses work with the TC-17E II?
The TC-17E II is compatible with select AF-I and AF-S Nikon lenses. Check Nikon's compatibility list before pairing, as not all AF-S glass works with this converter.
How much light do you lose when using the TC-17E II?
You lose approximately 1.5 stops of light. A 300mm f/2.8 becomes a 510mm f/4.7 equivalent; a 500mm f/4 drops to f/6.7.
Does autofocus still work with the TC-17E II?
Yes. The TC-17E II preserves autofocus on compatible AF-I and AF-S lenses, so you're not sacrificing tracking speed in the field.
What's the actual focal length multiplication?
The 1.7x magnification factor multiplies your host lens's focal length directly. A 500mm lens becomes 850mm; a 300mm becomes 510mm.
Is the TC-17E II smaller than carrying a second telephoto lens?
Yes. It adds minimal size and weight compared to packing a second prime, which is the whole point of the 1.7x focal length sweet spot it occupies in Nikon's converter lineup.
Will the TC-17E II work on older Nikon lenses?
No. It's designed specifically for AF-S and select AF-I lenses. Older manual focus or screw-drive AF glass won't be compatible.
SpecificationValue
MountNikon F
Magnification1.7x
Compatible LensesSelect Nikon AF-I and 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 D Type, Nikon F Mount G Type