1. The tripod mount ring is constructed from high-density aviation aluminum, precision-machined using a high-end CNC turning center and hollowed out with diamond cutter heads. It features vibration polishing technology, improving grinding precision by 20% compared to manual methods, and undergoes multiple anodizing processes to enhance surface finish and color uniformity by 10%. 2. Laser scanning technology is used to accurately capture lens dimensions, enabling precise shaping of the inner diameter of the lens collar based on collected data. Designed specifically for the Nikon PC NIKKOR 19mm f/4E ED Tilt-Shift Lens, it avoids interference with commonly used switches and knobs, preserving full lens functionality. The tripod ring mounts at the front of the lens and is not rotatable. This lens collar is not compatible with other lenses. 3. The lens support utilizes 3D engraving technology and features a contoured design with raised edges that securely grip the lens. It has a split structure with a 180-degree quick-lock knob; simply align the lens with the mounting surface and rotate the knob half a turn to lock. The unit weighs approximately 160g. 4. The minimum inner diameter of the lens holder is approximately 74mm. The lens contact surface is lined with a 0.3mm-thick protective film. The quick-release plate measures approximately 50mm in length and includes 1/4-inch and 3/8-inch threaded mounting holes with stainless steel anti-slip pins.