Shop › Voigtlander 40mm f/2.0 ASPH Septon Sony E Voigtlander 40mm f/2.0 ASPH Septon Sony E $699.00 sold out Voigtlander 40mm f/2.0 ASPH Septon — a manual-focus lens for Sony E-Mount. Filter thread: 43mm. Sold Out Added! Voigtlander 40mm f/2.0 ASPH Septon — a manual-focus lens for Sony E-Mount. Filter thread: 43mm.