Great lens, great value at an unbeatable price. It's cool IF you can get a good copy. However, as many on the internet have said, the lens has many mismatch and misalignment issues. I've heard about this problem from a lot of people online, but figured if it was at least consistent enough, I wouldn't mind keeping a lens that costs under $300 and is so specialized that I rarely use it anyway would. . Instead, I received a virtually useless lens. According to my tests, the lens has good centerโฆ