Sony FE 16-35mm f/4 PZ G Lens offers exquisite imagery and exceptional resolution. The advanced design of this compact, lightweight lens achieves imaging performance that has become the hallmark Sony G lens. The optical path includes two AA (advanced aspherical) elements, a standard aspherical element, one Super ED (Extra-low Dispersion) and one ED glass element, and one ED aspherical element. All these ensure chromatic and spherical aberration is controlled for excellent optical performance.