I bought a new telephoto zoom last monday. It's a nice upgrade from my current telezoom (bigger aperture, faster focusing motor, better build). I actually haven't got much time to fully test the lens yet: with this weather one just has to go to the beach and do nothing.
Yesterday, I did a quick walk to test my new lens. This shot, although far from perfect wasn't possible with the old one: it is taken half an hour after sunset while light levels are normally way too low.