ZEISS C Sonnar T* 50mm f/1.5 ZM Lens (Black) Leica M-Mount Lens, Aperture Range: f/1.5 to f/16, ZEISS T* Anti-Reflective Coating, Manual Focus Design, Minimum Focus Distance: 3', Filter Thread: 46mm, 10-Blade Diaphragm LENSES-Rangefinder Lenses