On my last trip to the local arboretum, I had a run in with a 'Pro' (which, in his case, meant his primary doctor was a proctologist) that was quite discouraging. Today, back at the Arb, I had a really great encounter with another Nikon shooter (800E, 300mm prime -- drool) that made up for that bad memory. We had a great back and forth about techniques, shooting spots, and gear. He isn't shooting here, but I don't care