Rolleiflex lenses are fixed on the TLR cameras and have either Zeiss Tessar, planar or Sonnar lenses for the tele Rolleiflex. Schneider also supplied lenses for the TLR cameras and they are the Xenar and Xenotar optics. The SL66 cameras had interchangeable lenses with bayonet mount. A special feature of the SL66 is that the lens can be reverse mounted for Macro close focus work.