The 24-70mm f/2.8 Carl Zeiss T* Alpha A-Mount Standard Zoom Lens from Sony is a bright zoom lens, specifically designed by Carl Zeiss for the Sony Alpha-series of DSLR cameras.
Unique to this lens is the Carl Zeiss T* (T-star) coating that helps reduce lens flare, while increasing contrast. When used with cropped APS-C sized DSLR cameras, the equivalent focal length for this lens is 36-105mm. It is a compact all-in-one lens, and is ideal for snapshots, portraits, interiors or outdoor scenery.
The lens' maximum aperture is a fast f/2.8 and can be maintained throughout the zoom range. Its minimum aperture is f/22. It also has 9 circular aperture blades that work to produce smooth, out of focus background effects.