Nikon 70-200 f2.8 VRII with Nikon 2X converter

On a D4, focus is very fast.

A few BIF pictures from my 70-200 and TC20E III. DOF not quite deep enough for sharpness all the way from the beak to the tail given the size of these Wood Storks (mostly shot at f8), but pics give a good idea of general sharpness. This is a series of images from a single bird's flight.

Michael E. Clark