The Fujinon A13x4.5BERM-M48B 2/3" 13x ENG Lens with 2x Extender is a high-quality zoom lens designed for professional use in various camera setups. With a maximum aperture of f/1.8 and a wide range of focal lengths from 4.5mm to 59mm, this lens allows for versatile shooting capabilities. The lens is part of the Fujinon HD series, known for its exceptional image quality and reliable performance. Made in Japan and compatible with Sony cameras and all B4 mounts, this lens is a valuable addition to any photographer's arsenal, offering a combination of wide-angle and ultra wide-angle perspectives.