The photo on the plastic film (thickness of about 6μm) cut growth 30mm, 20mm wide shape, remove the front lens group, the plastic film strip into the long thread, leaving the outside around 12mm, and use double-sided adhesive paste it in the mirror the outer wall of the cylinder, then twist the lens approached the group. If it is too loose can change some of the thicker plastic film, too tight then switch to thin some. Other components to be re-assembled, adjust the focal length that is successfully repaired.6dFservice manual download site