The Panasonic Lumix S 50mm f/1.8 is a lens with a fixed focal length of 50mm and a maximum aperture of f/1.8. The lens is designed for use with L mount full frat cameras. It is a compact and lightweight lens that is perfect for portrait photography, street photography and general photography. The lens has a fast and quiet autofocus and a minimal breathability. It also has a multi-coating that reduces reflections and ghosting.