ACHIEVE MACRO FOCUS - Integrated helicoid allows for close-up focusing, expanding your creative possibilities with any Canon EOS (EF / EF-S) lens on Sony E-mount cameras. ENHANCED IMAGE QUALITY - Maintains optimal image quality by ensuring a secure and precise connection between Canon EOS lenses and Sony Alpha E-mount mirrorless camera bodies. ADJUSTABLE FOCAL LENGTH - The stretch mount design provides variable extension, enabling fine-tuning of focal length for unique perspectives and creative effects. SUPERIOR BUILD QUALITY - Crafted with precision using durable materials, this adapter ensures long-lasting performance and reliability for professional use, protecting your lenses.