Perfect Compatibility for Samyang AF 35-150mm Lens: This tripod mount ring is specifically designed to provide stable support for the Samyang AF 35 to 150mm lens. It ensures steady shots and enhances your photography results by maintaining balance and reducing vibrations. Versatile Quick Release Design: Featuring a 70mm quick release plate at its base, this mount ring includes both 1/4 inch and 3/8 inch screw holes. It is compatible with Arca tripod ball heads, panoramic ball heads, and various clamps, offering flexibility and ease of use with different photography setups. Abrasion-Proof Protection: The specially designed contact surface effectively safeguards your lens from scratches and damage. Ensure there are no stickers on the lens surface at the mounting location to facilitate proper installation. Once mounted, the ring allows free rotation, similar to the original tripod ring, enabling smooth adjustments. Enhanced Stability and Balance: This tripod mounting ring helps secure and balance heavy or long lenses that may hang in front of your camera. By mounting it on a tripod, you ensure your equipment remains stable, allowing you to focus on capturing perfect images without worry. Premium Aluminum Alloy Construction: Crafted from aviation-grade aluminum alloy, this tripod mount ring offers exceptional durability and strength. The CNC machining process enhances its resistance to wear and erosion, ensuring long-lasting performance and reliability, even under demanding conditions.