Kenko Extension Tube Set for Nikon F  type_Tripod & Mounting The Nikon TC-14E II is

The Nikon TC-14E II is an autofocus teleconverter designed for select Nikon AF-S telephoto lenses (here's Nikon's compatibility list)

The maximum aperture isn't huge at f5-6

6 and 50mm f4 EL-Nikkor lenses

5 is a short telephoto lens for the modified M42 Fujinon mount

This Nikon 50mm f

Kenko Extension Tube Set for Nikon F &nbsptype_Tripod & Mounting The Nikon TC-14E II isA set of three extension tubes for Nikon F mount: 12mm, 20mm, and 36mm. These tubes have the electronic contacts necessary to maintain autofocus and autoexposure capabilities. If you're curious about dabbling in macro work, this is an inexpensive way to get started.