I like the lens a lot but even though it say F2.0 on the lens (and it could very well be a true 2.0), the display in my Nikon says F2.6 or something like that. What matters in the end is the amount of actual light coming in but that discrepancy is a bit surprising.
I have had this lens for a bit more than a week. So far this lens exceeds my expectations. I have only done handheld images so far, and under less than optimal circumstances -- it was windy.