The traditional open th box and shoot anything regardless of how stupid it is. I believe most of these were at 1.4. I borrowed my neighbors D600 since my D4 is out till tomorrow.
All I can say, it's amazing! I have owned the Noctilux, and all sorts of exotic glass. This Otus is the KING of bokeh!
It does not feel heavy at all. At least on the D600. The only thing I do not like so far is the stop at infinity. It makes that hard metal on metal bang when you reach the end of the rotation. However, it is the SMOOTHEST focusing lens I have ever felt.
Here are a few pics
More here :
zeissimages.com - The photo gallery.