Nikon TC-16a

Autofocusing Teleconverter (1986-)

Please help

I got mine at this link directly to them at eBay (see How to Win at eBay).

This ad-free website's biggest source of support is when you use those or any of these links to approved sources when you get anything, regardless of the country in which you live. Buy only from the approved sources I use myself for the best prices, service, return policies and selection. Thanks for helping me help you! Ken.


January 2017   Nikon Reviews   Nikon Lenses    All Reviews



Adorama Pays Top Dollar for Used Gear

B&H Photo - Video - Pro Audio

I buy only from these approved sources. I can't vouch for ads below.

The Nikon TC-16a teleconverter was an odd 1.6x teleconverter that both multiplied the focal length and f/number of a lens by 1.6, and also contained optics which allowed even manual focus lenses to be autofocused by the camera!

It was introduced with Nikons first autofocus cameras of the 1980s to try to give people a way to add autofocus ability to their existing manual focus lenses!

This nutty converter actually does work, converting a 50mm f/1.8 lens to an autofocusing 80mm f/2.8 for instance.



1.) It only works with better cameras which have a screw for autofocusing; it won't autofocus with the cheapest DX digital cameras like the D3xxx and D5xxx series.

2.) AF range is often restricted, and you may have to focus longer lenses manually to get them within the small range over which this AF teleconverter can shift the focus.

With an 80-200mm f/4 at 200mm the closest autofocus distance with the lens set to infinity is 50'/15m. With the lens set to 80mm and infinity, the closest autofocus distance is 12'/3m.

3.) You can't zoom and hold focus; you have to refocus after zooming.



I tried it and it works on my N2020, F4, F6 and N90s.

It doesn't work on my 4004, F100 or D80.

I'm told it works on the D2, but haven't tried it.

It works even with f/4 lenses, making them the equivalent of f/6.3.

It freaks out with G lenses on the F4. It gives A mode only, and thinks the lens is more open than its aperture actually is. Otherwise, it gives AF over the usual full range.


© Ken Rockwell. All rights reserved. Tous droits réservés. Alle Rechte vorbehalten.


More information.


Help Me Help You

I support my growing family through this website, as crazy as it might seem.

The biggest help is when you use any of these links when you get anything. It costs you nothing, and is this site's, and thus my family's, biggest source of support. These places always have the best prices and service, which is why I've used them since before this website existed. I recommend them all personally.

If you find this page as helpful as a book you might have had to buy or a workshop you may have had to take, feel free to help me continue helping everyone.

If you've gotten your gear through one of my links or helped otherwise, you're family. It's great people like you who allow me to keep adding to this site full-time. Thanks!

If you haven't helped yet, please do, and consider helping me with a gift of $5.00.

As this page is copyrighted and formally registered, it is unlawful to make copies, especially in the form of printouts for personal use. If you wish to make a printout for personal use, you are granted one-time permission only if you PayPal me $5.00 per printout or part thereof. Thank you!


Thanks for reading!



Mr. & Mrs. Ken Rockwell, Ryan and Katie.




January 2017