17 elements in 15 groups reduces aberrations, 3 Super ED lenses, 2 ED lenses diminish peripheral chromatic aberrations180 degree angle of viewZERO len..
55 mm, F1.8, 35 mm full-frame E-mount prime lens with a large 9 blade apertureCrafted with Carl Zeiss Sonnar T* opticsDust and water-resistant designM..