Combining impressive speed and optics, the Panasonic Lumix S PRO 50mm f/1.4 is a sophisticated normal-length prime for L-mount mirrorless cameras. Characterized by its fast f/1.4 maximum aperture, this lens excels in low-light conditions and also affords improved control over depth of field for isolating subject matter. The optical design incorporates a pair of aspherical elements and three extra-low dispersion elements, which reduce both spherical and chromatic aberrations for high sharpness and clarity throughout the aperture range. Complementing the optics is a unique double focus system, which utilizes both a linear motor and a stepping motor, to provide especially fast and precise focusing performance. Additionally, a rounded 11-blade diaphragm helps to achieve smooth, pleasing bokeh and the lens also sports a weather-sealed design for working in harsh conditions.