I received an urgent call from my son and business partner Brad telling me to hurry to get a shot of one of the most unusually colorful sunsets of the year. I am shooting pictures in my yard at the time so I have to sprint to the top of a nearby dune with my camera, biggest lens and heaviest tripod. I am winded but the tip and the effort pay off. F4.0 at 1/640, ISO 100, 500 mm lens at 500 mm