LUMIX S PRO CAMERA LENS - 50mm fixed focal F1.4 L-mount lens, LEICA certified for LUMIX S Series Full-Frame L Mount mirrorless cameras LENS ELEMENTS 13 lenses in 11 groups; 2 aspherical lenses and 3 ED (Extra-low Dispersion) lenses effectively suppress both axial chromatic aberration and chromatic aberration of magnification LENS FOCUSING A double focus system combines a linear motor and stepping motor to achieve sensor drive at a maximum speed of 480 fps for fast, high-precision autofocus LENS FILTER SIZE 77mm diameter filter with an 11-blade circular aperture diaphragm RUGGED LENS DESIGN Dust/splash*/freeze-resistant design withstands use under harsh conditions for high mobility LUMIX S PRO 50mm F1.4 This large-aperture fixed focal length lens achieves high resolution across the entire image and provides smooth defocus gradation, making it an ideal lens for portrait and low-light. Rugged Design for Intrepid Photography This lens is dust- and splash-resistant and designed for use at temperatures as low as 14 °F. It is tough enough to withstand even heavy field use. Video Support for Perfect Recording In addition to silent design, the lens offers both stunning autofocus and smooth aperture changes. This top-level performance allows you to record beautiful, ultra-sharp 4K video. Welcome to new possibilities: the L-Mount Leica Camera, Panasonic and Sigma now offer a solution that allows ˜mix and match' of any of the three manufacturers APS-C and full-frame cameras with any lens from each others product portfolios. S-X50 Lens Construction The optimized configuration has 16 lenses in 13 groups; 2 aspherical lenses and 2 ED (extra-low dispersion) lenses effectively suppress chromatic aberration and achieve high resolution.