1. The tripod mount ring is constructed from high-density aviation aluminum, precision-machined using advanced CNC turning centers and hollowed out with diamond-coated cutting tools. Vibration polishing technology enhances surface grinding precision by 20% compared to manual methods. Multiple anodizing processes improve color fineness and uniformity on the metal surface by 10%. 2. Laser scanning technology accurately captures lens dimensions, enabling precise machining 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, the design 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 split structure with a 180-degree quick-lock knob. Its design incorporates a precision bump structure that engages with the lens rims contours for secure fixation. 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 protective film. The quick-release plate measures approximately 50mm in length and includes 1/4-inch and 3/8-inch threaded mounting holes, along with stainless steel anti-slip pins.