marike6: AFAIK, the 70-200 f4 is Tokina's first lens with Vibration Reduction, which is definitely a good thing.
It doesn't seem to have a tripod collar which is surprising considering the 70-200 f4 Nikkor is close to 200g lighter, and has a collar.
Could be a great lens but there's a lot of competition at this focal length with the recent f4 and 2.8 announcements from Nikon and Tamron.
You have to pay extra for the collar on the Nikkor. It does not come with the lens.