K&F Concept NIK(G)-FX IV – Nikon F (G) Lens to Fujifilm X Mount Adapter

The K&F Concept NIK(G)-FX IV adapter lets you mount Nikon F-mount (G, AI, AI-S, D) lenses on Fujifilm X-mount cameras. It has no electronic contacts: you focus manually all the way to infinity, and the aperture of Nikon G lenses is set with the ring on the adapter. The fourth-generation IV PRO adapter has a knurled surface, a brass mount interface and a matte interior that suppresses light reflections.

Nikon F (G) lenses on Fujifilm X cameras

With the NIK(G)-FX IV adapter you can attach Nikon F-mount (G, AI, AI-S, D) lenses to Fujifilm X-mount cameras and keep using them on a modern body. The adapter is precision-made, so the lens sits firmly and focuses all the way to infinity.

Fourth generation IV PRO

The knurled non-slip surface with fine CNC engraving is easy to grip, even when changing lenses. The brass mount interface in an aluminium alloy body ensures precise, smooth mounting, and the connection does not deform even after 100,000 mounting cycles. The matte interior suppresses light reflections inside the adapter, and a red dot makes mounting and removal easy.

Manual focus and aperture

You focus with the ring on the lens while the camera works in aperture priority or manual mode. Nikon G lenses have no aperture ring; for these you set the aperture with the ring on the adapter.

Camera settings

Before first use, enable the option in the camera menu that allows the shutter to be released without a lens attached (Release w/o Lens). The camera does not recognise an adapter without contacts and would not release the shutter without this setting.

Compatible cameras

The adapter is designed for Fujifilm X-mount cameras.

Before you order

You will find the mount type of your lens and camera in their manuals or in the technical specifications on the manufacturer's website. The NIK(G)-FX IV adapter is designed for a Nikon F (G, AI, AI-S, D) lens on a Fujifilm X camera.