From the outside, this lens looks great!  On the inside, is a different story and the reason this is priced relatively low.  There are some scratches, dust, and what may be fungus or haze.  I did treat this lens with my UV box to kill any more fungus growth (if that is what it is).  I do not possess the skill set to disassemble the lens to properly clean it.  I bought this lens as part of a big bundle so I have no idea what happened to it.  With that being said, the lens works fine.  Aperture is clicky and the images look pretty good.  I took 3 sample images.  The white image is at f/1.2, the bluish image is at f/16, and the tree is at f/4.