"Get incredibly close to your subject with the SAL-70400G super telephoto zoom lens. Part of the acclaimed G Series, this zoom lens is ideal for sports, portraits and nature photography. This uncommonly flexible 5.7X zoom goes all the way from 70mm to 400mm and features an exceptionally bright f/4-5.6 aperture. Your pictures will benefit from two Extra Low Dispersion (ED) glass elements for high contrast and low chromatic aberration. Circular aperture enables pleasing defocus effects and youll even enjoy quicker response with the fast, smooth, nearly-silent focusing of Sony SSM technology. When mounted to Sony APS-C format α (alpha) DSLRs, this zoom lens achieves a phenomenal 105-600mm focal length."