I’ve had this lens for about a month now and have developed some thoughts on this lens. First off, the sharpness of this lens is fantastic; not much else to say about that. I’m not sure if it’s just my copy of the lens, but I do have quite a bit of front focusing on the 5D Mkii body, however the autofocus itself is very fast. I was afraid the 35mm focal length wouldn’t be right for me, and a 50 1.4 Art would’ve been a better choice, but after using it for a while, I think it’s a much more interesting focal length than a 50.