The Toyo Optics 70-210mm f/4.5 Macro Focusing Zoom Lens is a high-quality lens designed for Pentax cameras, featuring a maximum aperture of f/4.5 and a focal length range of 70-210mm. This lens is part of the Vivitar MC Macro series, known for its excellent sharpness and image quality. With a durable aluminum exterior and auto focus capabilities, this zoom lens is a versatile option for capturing detailed close-up shots. The lens comes with two caps for added protection and is compatible with 52mm filters. Made in Japan in the 1980s, this lens is a reliable choice for photographers looking to expand their capabilities.