Received my copy today, some quick testing on my A7r shows this lens to be very good considering the range it covers. Very sharp in center at 24, edges and corners soft, by 50mm the corners are good. And its good all the way out to 200. By 240 the edges are soft again. I plan on putting it head to head with my zeiss 24-70 this weekend. My thinking is that this might replace the 24-70 because I have the very good 16-35 to cover wide, and from 50-70 initial tests show the 24-240 to be good. This type of lens suits some of the urban shooting I do, and I think it will work out well for that use. It is a bit of a beast though.