The MC-EX16 Extension Tube is 16mm wide and has full electrical contacts to maintain AF and AE when used in conjunction with Fujinon X-System lenses. This extension tube will allow for closer focusing than any given lens will on its own. For a full chart, see: X System Lens Extension Tube Chart It is important to check the above linked chart for compatibility since with some lenses, the 16mm extension tube might provide a working distance that is too close to be practical.
