• Combines high standards of optical performance with an open F 2.0 brightness and a balanced body size • By using 2 glass mold, the aspherical lens allows for better correction of aberration, reducing the number of lenses and reducing the amount of lens is reduced • I series universal metal exterior. The parts made of cutting aluminum are not only beautiful, but also has been strengthened by improving the integrity of the product itself such as firm stiffness and durability • Sony E-Mount