I waited weeks for the leaves to change, and now they seem to have done it overnight. I drive home from Metro through tunnels of green and gold and that familiar acrid scent. Back home, I rush out with my camera to photograph the most beautiful trees in our neighborhood. The shimmering maples, the burning bush, and behind it all a wash of brilliant yellow from the turning oaks. We're expecting wind and rain later this week and the leaves that are now on the trees will soon be on the ground. It is good to acknowledge the fleeting nature of beauty — and of cameras.