With the SIGMA 20mm F2 DG DN | Contemporary Lens for Sony E, you can experience the pinnacle of optical performance in a compact, full-frame prime lens. This latest addition to SIGMA's esteemed I series lineup is designed for mirrorless systems, offering an ultra-wide 20mm focal length and a bright maximum aperture of F2. Weighing a mere 370g and measuring just 72.4mm in length, this lens is the epitome of portability, making it an ideal companion for everyday shooting.Whether you're capturing sweeping landscapes, wide-angle portraits, intimate weddings, or intricate interiors, this lens delivers stunning optical performance. It's particularly adept at astrophotography, thanks to its superior control of sagittal coma flare. This lens joins the ranks of the 24mm, 35mm, and 65mm F2 I series lenses, creating a well-matched set for L-Mount and Sony E-mount users.