K&F Concept NIK F-FX – Nikon F Lens to Fujifilm X Mount Adapter K&F Concept

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The K&F Concept NIK F-FX adapter lets you mount Nikon F mount lenses on Fujifilm X mount cameras. An all-metal build holds the lens firmly with no play. It is a purely mechanical adapter without electronic contacts: focusing is manual, the aperture is set with the ring on the lens, and infinity focus is retained.

Which lenses and cameras

On the lens side it takes Nikon F mount lenses, including AF, AI and AI-S. On the body side it fits Fujifilm X mount cameras, such as the X-Pro1, X-Pro2, X-T1, X-T2, X-T10, X-T20, X-E1, X-E2, X-A1 to X-A3 and X-M1.

Build and mounting

The adapter is all-metal and precisely machined, so it sits firmly and without play. A red dot makes mounting easy: align the dots and turn the lens and the body about 90° until the mount clicks.

Manual operation

The adapter has no electronic contacts, so the camera does not recognise the lens and neither autofocus nor automatic aperture control works. Focusing is manual and the aperture is set with the aperture ring of the lens. Infinity focus is retained. Before first use, enable shutter release without a lens in the camera menu (e.g. “Release w/o Lens” – the name varies by model), otherwise the camera will not fire.

Tips for use

• On telephoto lenses the infinity mark (∞) is deliberately offset slightly to allow for thermal expansion, so check infinity focus in the viewfinder or on the screen.
• On a body with an APS-C sensor the focal length is multiplied by roughly 1.5×, and a full-frame lens uses its sharp centre.

• 1 × K&F Concept NIK F-FX adapter

• Type: manual lens adapter
• Lens side: Nikon F
• Camera side: Fujifilm X
• Marking: NIK F-FX
• Material: metal
• Electronic contacts: no
• Focusing: manual
• Infinity focus: yes
• Aperture control: aperture ring of the lens
• Manufacturer code: KF06.101