SUPERIOR IMAGE QUALITY - Maintains the image quality of your Contax Yashica lenses when used with Canon EOS R mirrorless cameras, ensuring optimal performance. PRESERVE FOCAL LENGTH - This adapter allows you to retain the original focal length of your Contax Yashica lenses, providing versatility in your photography. MAXIMIZE APERTURE CONTROL - Seamlessly control the aperture settings of your Contax Yashica lens on your Canon EOS R camera body for creative depth-of-field effects. ROBUST BUILD QUALITY - Crafted from high-quality brass and aluminum, this adapter ensures durability and a secure connection between your lens and camera.