Make sure you have all your bases covered by keeping this compact 28-75mm f/2.8 SAM Lens from Sony with your full-frame A-mount camera. It delivers a wide-angle to short telephoto range that will satisfy many, as well as a constant f/2.8 aperture for consistent performance at all focal lengths. Ensuring top performance is the use of three extra-low dispersion elements and four aspherical elements, effectively combating and minimizing any aberrations.
For fast operation, the 28-75mm is equipped with a Smooth Autofocus Motor (SAM), which works with an internal focus design to provide smooth and quiet focusing. Also, it has a zoom lock switch to prevent lens creep when not in use. Other benefits of this lens include a minimum focus distance of 15" and a seven-blade circular aperture diaphragm.