Nikon TC-16A Teleconverter

The Nikon TC-16A teleconverter between a camera and an AI Nikkor lens. Once you have roughly focussed the combination, the TC-16A will take over and provide precise critical focus, as long as the camera you have the rig attached to is compatible. The TC-16A was introduced in 1985 when Nikon were behind in the automatic focus department. It was designed to reassure photographers with a collection of fast manual focus Nikkors that their needs were being taken care of and that they need not switch allegiance to another camera manufacturer. Nikon were slow to introduce their range of AF lenses at that time, having been corporately sceptical about automatic focus for professional SLR users. They thought AF would be viewed as a gimmick. How wrong they were.
The TC-16A is not compatible with every Nikon camera. It will work fine on the F401; F501; F801; F4; F90; F5; and D2. I use it on a D2Xs and an F90X and although Nikon say the lenses teamed with it must be f/2.8 or faster, I have noticed it works well enough with a 300mm f/4.5 lens as well. Some users hack their TC-16A teleconverters to make them functional with D200 and D300 cameras. Apparently it is not very difficult to modify the instrument, but I am not recommending it.

Photographed with an AF-S DX Nikkor 35mm f/1.8G on a Nikon D2Xs.