The money, it is definitely worth !!

I have been the lens absolutely not disappointed now for almost a year has passed and I am so far, quite the opposite! I use it with the Nikon D7000 and am indeed rather the amateur photographer, go and back to the racetrack or do a lot of wildlife photography.
After I bought the D7000, I had long wondered what lens to buy to finally am then at the Sigma or Tamron 70-200 stuck (which Nikon is just beyond my financial means.) I had wound up for the Sigma decided because the Tamron has then just made me a bad impression (that's been but pure gut feeling).

One must the dimensions of the lens does not underestimate and easy it is not exactly, but it is very comfortable to hold and is very stable. I used my camera lens quite often and I have so far not noticed any defects in processing, I do not fell down with the camera even once already and this is only the lens hood broken, which I then made a very good experience with the customer service, they have I quickly sent a new one.

But now times to the photos. On the racecourse, where it really comes to speed, I'll deal with the lens, the autofocus is instantaneous and provides the anrasenden horses immediately sharp, so that even in series of images almost always sharp pictures come out.

My Conclusion:

I would recommend it any time and buy again!