Voigtlander Super Wide Heliar 15mm f/4.5 M Mount Aspherical III Lens for Digital Cameras, Manual Focus New sharper Version III Leica M Mount Lens, 58mm filters Fits ALL Leica M mount cameras Easily Adaptable to All Sony NEX, M43, and Fuji X cameras with proper adapter Use Voigtlander VM to NEX Close UP adapter for Sony FE bodies 11 elements in 9 groups - one Aspherical element