The 70-200mm f/2.8 G Alpha A-Mount Telephoto Zoom Lens from Sony is G-Series zoom lens that covers a broad range of frequent telephoto focal lengths, with a 35mm equivalent range of 105-300mm, fast f/2.8 aperture and quiet, high-speed Super Sonic Wave Motor (SSM).
With a full range of functions geared to the professional photographer, this lens provides sharp images across the entire film area at all apertures. High-quality multi-coatings increase transmittance and reduced flare to preserve contrast. It is constructed of 19 elements in 16 groups, as well as two Extra-low Dispersion (ED) glass elements - which all help to deliver sharp, clear photos throughout the zoom range. It has a minimum focusing distance of 3.9' and a front-end filter diameter of 77mm.