K&F lens adapter M42 to FX mount

The K&F Concept M42 to Fujifilm X adapter allows classic M42 screw-mount lenses to be used on modern Fujifilm X-series cameras. Its precise all-metal construction creates a reliable connection between legendary vintage optics and contemporary digital camera technology.

The M42 mount is one of the most widely used lens mounts in photographic history and was adopted by manufacturers such as Pentax, Asahi, Praktica, Chinon, Fujica, Yashica, and many others. This gives photographers access to a huge range of characterful lenses, from standard primes to specialized macro and telephoto optics.

This adapter has been tested on a Fujifilm X-H2 paired with a Super-Takumar 50mm f/1.4 and functions correctly. The combination allows photographers to enjoy the renowned rendering of classic Takumar lenses while benefiting from the modern sensor performance, electronic viewfinder, and focus peaking features of Fujifilm X cameras.

The adapter contains no optical elements, ensuring that the original image quality of the lens is preserved. Focusing and aperture control remain fully manual, exactly as many vintage lens enthusiasts prefer. For photographers looking to continue using their M42 lens collection on a modern camera system, this adapter provides a simple and affordable solution.