I'm using this lens with a Maxxum 7, and sometimes I have a serious focus problem. The camera will focus on a point, and when I move from that, it can´t refocus on the new point. It just keeps moving the focus slightly back and forward, without real "hunting". I have to switch to manual focus, rotate the focus ring to another position, and then get AF again. It will repeat the problem 3-4 times, and then it's ok. This is recent, I have this lens for a few months, and it worked fine until now. I have a 50mm f1.7, and this hasn't happened to me so far ( I only got it a few days ago), so I believe the problem is in the lens and not in the body. Any thoughts?


Rui Durão