This Canon FD shares many of the same optical qualities of the Canon K35. These lenses were produced starting in the 1970s. Throughout that time there were many different versions of each focal lengths that came about. This set is a handpicked and curated set of some of the most choice optics to have in the set. This includes Aspherical versions of the 24mm, 55mm and 85mm this will give you an image that perfectly matches the K35. Their is also a Yashica 45mm has been added to the set to give you a matching look with a high speed T-Stop to bridge the gap at an always popular range on a full frame sensor. GL Optics MkV housing provides a uniform front diameter great functionality through the whole set.