The Vivitar 28mm f2.5 automatic fixed mount wide angle lens is a high-quality lens designed for Olympus cameras with an Olympus OM mount. With a maximum aperture of f/2.5, this lens allows for excellent low-light performance and ensures a sharp image. The manual focus feature allows for precise control over the focus, making it ideal for photographers looking to capture stunning landscape shots with its wide 28mm focal length. Easy to use and versatile, this lens is a must-have for any Olympus camera owner looking to expand their creative capabilities.