The LEE Fujifilm X100/S Seven5 Adapter Ring is a rigid, aluminum threaded ring that enables the attachment of a Seven5 filter holder to the lens of a Fujifilm X100 or X100 S digital camera. Due to the unique design of the X100/S's built-in lens, it is not possible to attach traditional filters without the use of an adapter ring; this adapter ring enables the lens to focus properly while allowing the use of the LEE Seven5 filter system.