Shop › Voigtlander 55mm f/1.2 AIS Mount SL-IIS Voigtlander 55mm f/1.2 AIS Mount SL-IIS $649.00 sold out Voigtlander 55mm f/1.2 AIS Mount — a manual-focus lens for Nikon AI-S / SL-IIS. Filter thread: 52mm. Nikon AiS Black 4002451006699. Sold Out Added! Voigtlander 55mm f/1.2 AIS Mount — a manual-focus lens for Nikon AI-S / SL-IIS. Filter thread: 52mm. Nikon AiS Black 4002451006699.