This Osawa Mark II 70-210mm f/3.8 Lens is a high-quality zoom lens designed for Yashica Contax mounts. The lens has a maximum aperture of f/3.8, which allows for great low-light performance. The focus type is manual, making it easy to control the shots. The lens is from the brand Osawa and has a focal length of 70-210mm, making it perfect for a range of photography styles. The model is Mark ii 70-210 1:4-5 Macro Osawa MC. This lens is a great addition to any photographer's collection and is sure to impress.