Take your photography to the next level with the FotodioX Mount Adapter, expertly designed to connect your Contax 645 lenses to any Nikon F-Mount Slr or Dslr camera body. This high-quality adapter opens up a world of possibilities, allowing you to utilize your existing lens collection across different camera bodies, thereby maximizing your investment and expanding your creative potential.The FotodioX Mount Adapter is renowned for its precision engineering and robust all-metal construction, ensuring a secure, tight connection between your camera and lens. This eliminates any play and guarantees smooth mounting for long-lasting, reliable performance. One of the standout features of this adapter is its built-in iris, which provides a degree of control over the light entering the lens. This is particularly useful when using Contax 645 lenses, which have an electronic aperture that won't function with an adapter.