Jordan: I guess I didn't express clearly in my poor English. when I say "the lens" I mean the lens Oren was considering to buy, because Oren's two test shots don't seem very sharp to me, and I know nate's very nice bird pictures were mostly shot with his 400mm/5.6 before he got his 500mm/4.0, I enjoyed all his post, that's why I said I'm his big fan.