SUPERIOR BUILD QUALITY - Crafted with 100% brass for durability and stability, ensuring a secure and precise connection between your Canon FD lens and Sony E-mount camera. ENHANCED COMPATIBILITY - Seamlessly adapts Canon FD lenses to a wide range of Sony E-mount cameras, including NEX series, a7 series, and more, expanding your lens options. PRECISION ADAPTATION - Maintains optimal image quality and focus accuracy, allowing you to utilize your favorite Canon FD lenses on your Sony E-mount camera bodies effectively. ROBUST DESIGN - The cooper mount provides a solid and reliable connection, minimizing wobble and ensuring long-lasting performance for professional use and demanding shoots.