After extensive research and development, the KandF Concept High Precision Lens Adapter Mount, M42-nex, has been designed to bridge the gap between your M42 mount lenses and Nex camera bodies. This precision-engineered lens adapter mount is a must-have accessory for photographers looking to expand their lens options without investing in new equipment. Constructed with high-quality, durable materials, this KandF Concept Lens Adapter Mount ensures longevity and reliability. It features a precise, seamless connection between the lens and camera, ensuring there is no play, gap, or wiggling after mounting. This guarantees optimal performance and image quality by maintaining the correct flange distance.The M42-nex Lens Adapter Mount is not just about functionality, but also about ease of use. It allows for manual control, enabling you to adjust the focus and aperture of your M42 lens manually when used with Nex cameras.