Fotodiox released their new Fotodiox 11mm Auto Macro Extension Tube. They launched Fotodiox 20mm and Fotodiox 48mm Auto Macro Extension Tubes before. All these devices are electronic communication and you can use its autofocus, and control its aperture with command dials.
Or you can use the 11mm Macro tube with the Fotodiox 20mm or 48mm macro extension tubes to get even more Macro capabilities.
