The K&F Concept M42 Fujifilm GFX lens adapter allows the use of M42 screw mount lenses on Fujifilm GFX medium format cameras. This adapter is made of brass and aluminum, ensuring durability and precise alignment for reliable performance. It supports full manual operation, including manual focusing and manual aperture adjustment, which requires the use of manual exposure or aperture priority modes on the camera. For proper functionality, the 'Shoot Without Lens' option must be enabled in the camera menu, and stop-down metering should be used, as the lens aperture cannot be controlled by the camera body. The adapter measures approximately 2.5 cm in length and weighs around 50 g, making it compact and portable. Its black surface gives it a neutral appearance that blends well with camera equipment. This product is ideal for photographers looking to adapt classic M42 lenses to modern GFX systems, providing a straightforward solution to expand lens compatibility without electronic communication. Always consult your camera manual for specific setting adjustments to avoid issues like 'Lens Not Properly Installed' warnings. The model number is KF-42G, designed for enthusiasts and professionals who appreciate mechanical precision and versatility in their photography gear.