I received my copy from Ebay. Yep, it was full of fungus and the aperture doesn't work because a piece is missing and the ring is damaged. Typical Ebay purchase. So, it is any good? I cleaned the fungus out but I couldn't do anything with the diaphragm. I shot these pics at f2.8 and they are good. I can honestly say this lens is usable at f2.8. It is sharp at f2.8. Color rendition is cool. Contrast is good. Fringing is well controlled, but there is some noticeable bokeh fringing. Bokeh is very busy..