Telephoto zoom lens series sony sal sony dt lens mount minolta asony a lens speed 4 focal length 55 200 mm zoom factor 36 times suitable for sensor type aps c construction zoom lens area of use sports photography focus auto focus af motor no internal af motor circular aperture reduced frame size closest focusing distance 95 cm focal length equivalent to 35mm camera 82 5 300 mm lens construction groupselements 913 number of aperture blades