Nikon TC-14E II lens mount_Sony E Nikon AF Teleconverter TC-16A for

Nikon AF Teleconverter TC-16A for Nikon F mount

or you're thinking of converting to a plate camera

body and back light seals are new

sturdy ball head suitable for DSLR and medium format systems (it'll hold up to 6kg)

Nikon TC-14E II lens mount_Sony E Nikon AF Teleconverter TC-16A forThe Nikon TC 14E II is an autofocus teleconverter designed for select Nikon AF S telephoto lenses (here's Nikon's compatibility list). Provides a 1. 4x focal length boost, costs about a stop of light. One of Nikons most widely compatible teleconverters, this TC 14EII is in good cosmetic condition, with some paint wear; optics and function are excellent.