Tamron 17-28mm f/2.8 Di III RXD Lens - Front and Rear Lens Caps - Tamron 6 Year Limited Warranty - Bundle Includes: - ProOptic 67mm Digital Essentials Filter Kit - Complete Optics Care and Cleaning Kit - Universal Lens Cap Tether - Corel Mac Individual elements also feature Tamron's BBAR coating, which suppresses flare and ghosting for greater contrast when working in backlit and harsh lighting conditions The 17-28mm f/2.8 Di III RXD from Tamron is a versatile zoom for full-frame Sony E-mount mirrorless cameras Covering ultra-wide to wide focal lengths, this lens is particularly suitable for landscape, astrophotography, and architectural shooting