Tamron 70-200mm f/2.8 DI LD (IF) Macro Pentax Af Mount Lens Kit - USA Warranty - with 77mm Photo Essentials Filter Kit, Lens Cap Leash, Professional Lens Cleaning Kit Tamron 70-200mm f/2.8 DI LD (IF) Lens - Front Lens Cap - Rear Lens Cap - Lens Hood - Case - Tripod Collar - Tamron 6 Year USA Warranty - Bundle Includes: - 77mm Photo Essentials Filter Kit (UV/CPL/ND2) - Lens Cap Leash - Professional Lens Cleaning Kit Dual Format (full size and APS-C size) Ultra Telephoto Capability to 310mm* with f/2.8 aperture (*on an APS-C DSLR, Tamron uses 1.55X as an average) Remarkably Lightweight Best MFD on the market (37.4")