SOLD Good lens. I've had it for 4 months. No scratches. Both front and back elements are perfect. There are less than ten TINY particles inside the lens. Overall I give it 9.5 out of 10. The build quality is beautiful. It's solid. The mount and the lens barrel is metal. There is also a range scale which really comes in handy in low light situations. I want 180 Canadian beavers for it - just as much as I paid for it myself.