The best line of sight with the closest reach for this osprey nest had me standing on the side of the road at Sandy Hook, with the 1.4X teleconverter paired with the 120-400mm on the 1.6X sensored Reb XTi to shoot between a couple of trees that blocked many angles of view. But I was able to make some frames with good birds, and the tree gives a feeling of spying into their world. 1/1250 F8 ISO 400 at full zoom.