The Model A043 features a specialized optical formula that employs three LD (Low Dispersion) and three hybrid aspherical lens elements to thoroughly control optical aberrations. Tamron’s proprietary anti-reflecting BBAR Coating significantly reduces ghosting and flare that might otherwise occur under backlight conditions, where portraits are often shot. The result provides the advanced levels of sharpness and contrast that today’s high resolution 50+ megapixel DSLRs require. Tamron has also balanced MTF performance to produce exceptional resolving power across the entire zoom range and deliver premium optical performance. Furthermore, Tamron has combined its many years of expertise in producing soft, beautiful bokeh defocus blur with the latest simulation technologies. As a result, the contrast between in-focus areas rendered accurately down to the fine details and backgrounds that gently blend into the scene produces a single high quality image. Enjoy this excellent, inspired performance for portraits, landscapes, travel, family snapshots and more across a wide range of photography subjects.