Rollei Extension Tube 67mm - Rollei makes five different extension tubes for the 6000 series cameras - 9, 17, 34 and 68mm. They also makes a Zoom Extension Tube that covers a 22-68mm range. The Zoom is only usable to a limited extent with the fast Schneider lenses.
Note:
For use with the 150mm APO Macro Symmar lens