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-coated cutter heads. It features vibration polishing technology, enhancing grinding precision by 20% compared to manual methods, and undergoes multiple anodizing processes to improve surface finish and color uniformity of the metal by 10%. 2. Laser scanning technology accurately captures 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 to 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 unique bump design that secures the lens via the contour of its convex and concave edges. It has a split structure with a 180-degree quick-lock knob; once the lens is aligned with the mounting surface, a half-turn securely locks it in place. Net weight is approximately 160g. 4. The minimum inner diameter of the lens holder is approximately 74mm. The lens-bearing surface is lined with a 0.3mm-thick 3M plastic 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.