The SLR Hut Sony FE PZ 28-135mm f/4 G OSS Lens is a wide-range zoom lens, covering wide-angle to telephoto perspectives, while adding many features for full-frame APS-C or E-mount camcorders, and still photography camera systems. The lens, featuring power zoom control with variable speed and zoom rotation direction reversal capability. Powering the zoom function is SSM (Super sonic wave motor) drive, allowing precision and quiet operation.