This is a good lens. The optics are really good but my experiences with the build quality leaves me having to rate the lens lower. I was carrying mine and the camera swung around on the strap when I was turning and the front edge of the filter struck a counter top. Not a great blow at all but the filter ring split and I had to do a self help repair with thin layers of plastic glue. It will hold a filter now (barely) and the lens hood seems to keep all in place but the hood seems to always pop off. I am ambivalent about this lens---great pictures but not sturdy at all.