Panasonic's Leica DG Summilux 25mm f/1.4 ASPH Micro 4/3 Lens is designed for use with Lumix G Micro 4/3 cameras. It provides an angle of view similar to a 50mm lens on a 35mm or full-frame digital camera, & the wide f/1.4 maximum aperture can deliver beautiful, bright photos & videos with softly out-of-focus backgrounds. Built to Leica's usual high standards, this lens delivers excellent image quality with minimal distortion or chromatic aberrations, with a sturdy metal mount. Nano Surface Coating minimizes reflection over the entire visual light range, resulting in sharp, clear images with very little ghost & flare. The use of the Ultra High Refractive index lens & glass mold aspherical elements helps the lens maintain superb uniformity edge to edge. Seven aperture blades form a circular aperture for very pleasing out-of-focus areas in your images. * F1.4 brightness allowing a beautiful soft focus for photos & videos to be even more impressive * A superb image quality with minimum distortion, chromatic aberrations that pass a stringent Leica standard * The UHR (Ultra High Refractive) index lens & glass mold aspherical lenses for achieving uniformed description from the center to the edges * Panasonic's Nano Surface Coating technology minimizes reflection at the entire visual light range (380nm-780nm) by applying the extra-low refractive index coating with nano-sized structure on the surface of the lens. It results in super clear pictures with dramatic reduction of ghost & flare. * Circular aperture diaphragm * Durable metal mount