For lenses with a 67mm thread. Screws onto the lens with a fluid action thanks to the sturdy construction and aluminum screw thread. The adapter ring is crucial to the LEE Filters system. It screws onto the camera’s lens and, in turn, the filter holder clips onto the adapter ring. The wide angle adapter ring is suitable for use with wide angle lenses. It differs from the standard adapter ring by sitting closer to the front element of the camera’s lens. As a result, the likelihood of vignetting is dramatically reduced.