SIGMA 24-70MM F/2.8 DG OS HSM ART LENS FOR CANON EF BUNDLE INCLUDES: 82mm Digital Essentials Filter Kit ProOPTIC Lens Wrap Cleaning Kit Lens Cap Lens Cleaner Software Kit FAST F2.8 CONSTANT APERTURE: Delivers excellent low-light performance and consistent exposure throughout the zoom range. OPTICAL STABILIZATION (OS): Reduces camera shake for sharper handheld photos and smoother video. ART SERIES OPTICAL DESIGN: Provides outstanding sharpness, clarity, and color accuracy across the frame.