I had a little bit of time to experiment with something today. The setup at first was D2x + 1.4TC + 12mm tube + 80-400vr, and in that order. So now I am close to 600mm shooting 1/250th at f8, handheld, and manual focus . I caught this Robin with lunch. Note that this was shot at ISO800 and that f8 at this focal length gives a DOF of about 1.5 inches. Then I added an SB800 with better beamer and captured a couple of doves. How am I doing, Gale?