It would be interesting to see what would happen if a Leica M10 offered the high iso performance of the D3S. Would M10 owners still fork out the big bucks for ultra fast lenses? The Nikon 200/2 VR is now, IMHO, pretty much a one trick pony (shallow DOF) whereas it used to be the only way to capture indoor sports effectively. Not knocking this lens at all... I love it... just trying to make a point.