For Sony E-Mount interchangeable Lens cameras and full frame compatible. Aperture range of F2.8-22; constructed of 7 elements in 6 groups. Ultra compact size with a maximum diameter of 2.43 inches and a minimum focusing distance of 13.8 inches. Uses 49mm size Filters and features 7 diaphragm blades. Minimum Focusing Distance: 13.8ft (0.35m). The integrated autofocus motor works in conjunction with Sony cameras' focusing systems for quick, accurate, and precise AF control. Manual focus override is also available for refining your focus position.