PENTACON GDR 135mm f2.8 M42 MOUNT TELEPHOTO SLR LENS, A RARE NOW ORIGINAL EAST GERMAN LENS, COSMETICALLY THE LENS HAS WHAT LOOKS LIKE FUNGUS OR BLOOMING IM NOT QUITE SURE TO BE HONEST IN ITS ELEMENTS THE IRIS WORKS OK ON THE AUTO MIDE BUT ITS A BIT STICKY ON THE MANUAL MODE, SO AS THESE LENSES ARE FOR THE OLD STYLE SLR CAMERAS I CANT FULLY TEST THEM ON A CAMERA BODY, SO PLEASE NO RETURNS ON THIS ITEM AS ITS BEING SOLD AS SEEN, A CLASSIC TELEPHOTO LENS THIS ONE,