Property me the lens when "m not stupid market" bought. For the price of a disappointment. Maybe it was a bad version. It lacked somehow the colors, the images were often blurred and dark autofocus began partially to pumping. The focus itself is not the fastest. My camera is a Sony A55. Since I was not really happy with the lens, I managed back and bought a Sigma. With whom I am pleased with a few small drawbacks. The only clear advantage was the weight. The Sony is much lighter. Too bad.
