INCLUDED - Sigma 16-28mm f/2.8 DG DN Lens, Hood, Caps, Warranty, ProOptic Filter Kit, Lens Shade, Soft Case, Cleaner, Cleaning Kit, Cap Tether for complete care. SUPERIOR OPTICAL PERFORMANCE - Achieve exceptional image quality with 5 FLD and 4 aspherical elements, minimizing aberrations for clear, detailed photos. VERSATILE WIDE-ANGLE ZOOM - Capture expansive landscapes and architecture with a 16-28mm range, perfect for creative compositions and dynamic perspectives. CONSTANT F/2.8 APERTURE - Maintain consistent exposure and shallow depth of field throughout the zoom range, ideal for low-light conditions and artistic bokeh.