SUPERIOR COMPATIBILITY - Specifically designed for Tokina 11-20mm lenses, ensuring a seamless fit and optimal performance with your existing equipment. ENHANCED IMAGE QUALITY - Maintains the integrity of your lens's optical performance, providing sharp, clear images without distortion or vignetting. ROBUST DURABILITY - Constructed with high-quality materials, the ARRI PL mount guarantees long-lasting reliability and withstands rigorous use in professional settings. PRECISION ADAPTATION - Includes 5x shims for precise adjustments, allowing for accurate back focus calibration and optimal image alignment for critical shooting scenarios.