Nikon TC-16A converter

This is a 1.6x teleconverter that provide limited autofocus capacity with manual focus Ai/Ais lenses. It is discontinued but can be found for less than 100$ secondhand. The converter works fully only with certain Nikon cameras. It does not autofocus with DSLR (except D2h/x). The optical quality is very good although you lose up to a stop.

I tried it with the F/N 90 and it works pretty well. It won't autofocus over the whole range of given lens. The process is to focus manually to a given range, such as infinity, mid-range or close range and then activate the autofocus for focus fine tuning by pressing slightly the shutter (as for any AF lens). Focus action is quick and there is little or no hunting.

Clearly the TC/manual lens combination is better suited for for tele lenses. It also work with zooms. I find it particularly useful for portraits as normally the subject moves slightly and focus need to be adjusted constantly. And there is also the focal gain of 1.6x which makes a 50 f1.4 a 80 f2 autofocus.


Here I tried the TC-16A with Voigtkander's 75 mm 2.5 which turns into a 120mm.

(Images: nicovandijk; ixiyizi)