Yes, it is really impressive lens, Gentlemen, thank you! But there is not the highest resolving power only - color, contrast/microcontrast, distribution of light, luck of coma, practical absence of most geometrical distortions, very reliable stability - to name only few, but not all, positives sides. But there are some sides one has to be very caution about - shocks from the front, as well as from sides! It is not , definitely, the lens to travel over the bike with! And watch the outside temperature difference - the FT may differ +/- 2 units, what is unacceptable absolutely, so, check it, time-to-time. Yes, it looks like Nikon put the best glass and a lot of engineering efforts to create such the successful lens, out of questions! Let us see, what a new 180-400 will bring, and, while it is not for me - weight and price - a lot of colleagues are waiting for it! Thank you! LZ