Kjempeflott optics. You get a lot for your money! "Bokeh" is pretty and round the whole picture and stays round when stopping down. The images are very sharp at f / 2.8, but even better at f / 4. Autofocus is not the fastest, but it is accurate and gets the job done.
The lens is a bit too heavy for my taste, but that's maybe because I have a D3200.
Secured in a metal can tolerate a lot, but is not rainproof.
All in all:
72mm filter thread.
Conclusion: a very good lens for money. Recommended for use, since you get more for your money then. Got this for 1500 -.