I bought this lens new a few months ago. I've used it just a few times and it looks and functions as new.
Here's the facts. It is critically sharp at f2.5 and above. It's sharp in the center even to f1.8. The AF is extremely accurate. But like any 1.8 lens DOF is narrow wide open so you have to keep it exactly where you focused it. This lens is superior to the previous EF 50mm f1.8 lenses (both versions) and the Canon 50mm f1.4 USM. It has way more accurate is AF than the 50mm f1.4 USM. It rivaled the Sigma 50mm f1.4 I was using before it (not the Art).
I bought the new Tamron 45mm f1.8 VC, and I don't do video so I don't need this anymore. If you're curious about this lens, here's a chance to get a great optic for the price of a nice dinner out. $95 and I'll pay shipping and paypal fees
email kachadurian@gmail or text/phone 231-883-4325
-- hide signature --www.kachadurian.comCall me crazy. I happen to like photos of cats.