The Upper Slickrock of Zion National Park is an incredible maze of towering Navajo Sandstone monuments and mesas cut by narrow and sometimes deeply incised watercourses that hold pockets of run-off which nourish the micro-environments of cottonwood, gamble oak, sawtooth maple, rabbitbrush, Indian paintbrush, and others that flourish there. Gravity at work here ultimately sends everything it can to the Virgin River more than a thousand feet below. The Upper Slickrock is an amazing place for creative effort. In early November the beautiful yellows of the cottonwoods carpet the floors of the watercourses and in a passing storm, leaves come down by the thousands to swim in the pools that await them. As the skies clear, what is reflected are the shades of blue mingled with the leaves that still cling to trees overhead. I wanted to isolate a single leaf, submerged, or partly so, in a shallow pool. I knew that in open shade, the camera’s sensor would more readily “see” the blue on the edges of the water, and I chose my settings so as to render the single leaf sharply focused while showing the reflected leaves with just sufficient detail to create a sense of their presence. The warm tones of the sand added just the color contrast I was seeking, and the small, gritty pebbles added context. A focal length of 262mm isolated the angle-of-view I wanted. An aperture of f/22 allowed me to choose my point of focus and depth-of-field carefully; and a shutter speed of 0.6 seconds at ISO 100 gave me an overall slightly lighter-than-medium exposure. The absolute stillness of the air allowed for the shutter speed I mentioned, since the surface tension of the water was not a problem for that shutter duration.