M42 Lens Conversion Rings 1mm Modification Adapter Magnifying for Camera Accessories

Fine workmanship! Easy to install, remove and operate the lens Change lens purpose, cannot focus continuously when used directly M42 mount large format or magnifying lens with focusing tube and modified lens adapter, for use with the camera Although lens fits physically, the automatic aperture, auto focusing or other functions will not work properly when using this adapter With this adapter, you can modify an M42 mount large format or magnification lens for a camera