The SIGMA Multi-Coated Pantel 135mm F/2.8 Lens for Olympus mount is a high-quality portrait lens designed for Olympus SLR cameras. With a maximum aperture of f/2.8, this lens is perfect for capturing smooth and beautiful portraits. The manual focus feature allows for precise control over your shots, while the fixed focal length of 135mm ensures consistent and flattering results. Whether you're shooting on film or digitally, this lens is a versatile and reliable option for creating stunning portrait photography.