I can honestly say I think I have never seen one except pics, but this 400mm af-s f2.8 is a mamoth of a lens :shock: . The size of the element compared to my ol 300mm f4 af-s is about 3 x larger. My first challenge was trying to figure out how the heck I get that on the d2h as my wimberly stuff hasnt shown up yet. 11Ibs in one hand, d2h in the other and try to get it on :? ........... OH, this is going to be fun. LOL!!!!!!! :lol: :lol: Sorry had to share in my excitement............now if it would just fricken warm up....Going on a road trip in a month to shoot wildlife for a week, so should be a whoot. No florida but BC will have to do!