The Sigma MINI-TELE MULTI-COATED 135mm F3.5 lens is a classic telephoto prime lens designed for Minolta MD mount cameras. With a maximum aperture of f/3.5, this lens is ideal for portrait photography, capturing crisp and detailed images with a smooth bokeh. Made of brass and manufactured in the 1970s, this Sigma lens is a durable and reliable choice for photographers looking to add a high-quality telephoto lens to their collection. With manual focus and a fixed focal length of 135mm, this lens is perfect for capturing professional-looking portraits with stunning clarity and precision.