Zeiss Vario-sonnar T series SSM ZA ASP Zoom lens with an aperture of f/2.8 is compatible with Sony Digital SLR cameras. This Zeiss lens is capable of being used with Auto focus. It contains 17 elements in 13 groups and features a focal length of 70 mm. The lens is compatible with 77 mm filters. It has 8.3 cm diameter, 11.1 cm length and weighs 955 g.