This rare 400mm f/5.6 prime lens by ProSpec Sigma is an amazing addition to any vintage photography collection. With a maximum aperture of f/5.6 and a focal length of 400mm, this telephoto lens is perfect for capturing distant subjects with incredible clarity. The lens is in near mint condition and has been well-preserved over the years, making it a true gem for any photography enthusiast.This lens is designed with a Minolta MD mount and is compatible with a wide range of vintage cameras. It is a perfect choice for anyone looking to capture stunning images of nature, wildlife, sports, or any other distant subject. Get your hands on this rare ProSpec f/5.6 telephoto lens today and take your photography skills to the next level!