The Schneider Kreuznach Tele-Xenar 1:3.5/135 Lens is a high-quality telephoto lens designed for photography and videography. With a maximum aperture of f/3.5, this lens allows for a smooth and precise focus, perfect for capturing detailed images and videos from a distance. The manual focus feature provides photographers with complete control over their shots, while the screw mount ensures easy attachment to compatible cameras. With a focal length of 135mm, this lens is ideal for a variety of photography styles and situations, making it a versatile and reliable option for professional photographers and videographers.