What I do not like, is that the firmware you can not update itself according to Sony. The objective I had to send it to the repair service for the purpose of update. This is within the warranty period at no charge, but laborious and connected with several days delay. This is better for the old models. Let's see when I'll get it.
As I said, I'm usually very happy with the lens. However, I am not a professional photographer, but taking pictures as a hobby