On a morning walk in Katmai last fall the clouds were rolling, growing and dissipating quickly over the Kejulik mountains in Katmai National Park. While I don’ t normally use the 1D Mark IV for landscapes, I wanted the focal magnification factor that the 1.3x offered, turning my 500 into a 700 mm. It was happening fast so I grabbed a few frames of the clouds behind the jagged ridge of Mt Katonlinat. The photo was taken about 10:00 am. In a few minutes, the clouds were gone and without that white background to outline the ridge, the rock definition became difficult to see from such a distance. Clouds–when you see them making an interesting scene–shoot quickly.