The Shift Lens Support V2 for Laowa 15mm f/4.5 and Laowa 20mm f/4 Shift Lenses from Venus Optics is a lens support that is compatible with both 20mm f/4 Zero-D Shift and 15mm f/4.5 Zero-D Shift lenses. The rotatable ring outside is specifically helpful to retain the axis of the image when changing orientations and shifting. It is especially important to achieve perfect stitching for panoramic photography. This shift lens support features precision scales and makes precision adjustments much easier.