Bundle Items Include: Zeiss Batis 18mm f/2.8 Lens for Sony E Mount (2136-691) + 64GB Extreme Pro SD Card + 77mm 3-Piece Filter Kit + Padded Lens Case + Memory Card Wallet + Hand Strap + Lens Cap Keeper + Mini Tripod & Cleaning Kit. Wide-angle prime is designed for full-frame Sony E-mount mirrorless cameras, however can also be used with APS-C models where it will provide a 27mm equivalent focal length. Bright f/2.8 maximum aperture suits working in available-light conditions and is also ideal for astrophotography use.. Distagon optical concept affords high sharpness, well-corrected image quality from edge-to-edge, and very low field curvature.. Two aspherical elements, five elements made from anomalous partial dispersion glass, and a pair of aspherical elements also made from low dispersion glass are featured, and all contribute to significantly reducing chromatic and spherical aberrations, color fringing, and distortion for improved clarity, sharpness, and resolution.