Last week we drove through Great Smoky Mountains National Park. It was raining. It was foggy. We had just crossed over the overlook near Clingman's Dome (couldn't see anything, other than the road) and was heading downhill when I pulled off the side of the road. And waited. I got out of the car with my camera and watched the fog come in and dissipate. There was a possibility for wonderful pictures, if one is patient. The trees are always there, in the same spot. But it is a different scene each time, because of the quality and direction of light. Fog is even more fun, with diffuse, even light as it obscures and reveals and hides again. So there were dozens of photos as the scene changed as I stood in the rain. I must have been a sight. Other cars would stop, and the passengers would look to see what I was looking at, and they would shake their heads, and drive on. If they had just waited,...