Sony SAL-70400G2 70-400mm F4-5.6 G SSM Super Telephoto Zoom Lens G Series 70-400mm F4-5.6 SSM Telephoto Focal-Length : 70400 mm (35 mm Full Frame), Minimum Focus Distance : 4.93 ft (1.5 m), Maximum Magnification ratio : 0.27x New Nano AR Coating with nano-precision structure, High-performance AF with enhanced object-tracking 105-600mm (35mm equivalent) w. APS-C format cameras Two Extra-Low Dispersion (ED) glass elements