PRESERVE IMAGE QUALITY - This adapter maintains the highest optical integrity, ensuring no degradation in image quality when using Leica R lenses on your Leica M body. ACHIEVE OPTIMAL FOCUS - Precisely engineered to ensure accurate focus and infinity focus, allowing you to capture sharp and detailed images with your Leica R lenses. ENHANCE LENS COMPATIBILITY - Expand your lens options by seamlessly adapting Leica R lenses to your Leica M camera, opening up a wider range of creative possibilities. RETAIN APERTURE CONTROL - Maintain full manual aperture control, giving you complete command over depth of field and exposure settings for creative and precise photography.