Shop › Voigtlander 40mm f/2.8 Heliar VM (Black) Voigtlander 40mm f/2.8 Heliar VM (Black) $449.00 sold out Voigtlander 40mm f/2.8 Heliar — a manual-focus lens for Leica M Mount. Filter thread: 34mm. Sold Out Added! Voigtlander 40mm f/2.8 Heliar — a manual-focus lens for Leica M Mount. Filter thread: 34mm.