The Cosina MC Cosinon-W 28mm f/2.8 Wide Angle Manual Prime Lens is a high-quality lens designed for Pentax K mount cameras. With a maximum aperture of f/2.8, this lens is ideal for capturing sharp images with beautiful depth of field. The lens is made of aluminium and features manual focus, making it a versatile option for photographers shooting both film and digital. It comes bundled with both lens caps and is a reliable choice for photographers looking for a wide-angle prime lens with exceptional image quality.