The sunlit waterfall is clearly the most important highlight in this photograph. A spot meter reading off the white water indicated 1/125 sec at f/11. Anything white or nearly white, like this waterfall, is a perfect candidate for Zone 7, so I opened the aperture two stops to f/5.6, placing the water on Zone 7 – light, but not washed out. (An in-camera spot meter should indicate +2, or two stops of overexposure, for Zone 7, as shown here.) Note that because I wanted to freeze the motion of the waterfall, and depth of field was not a concern, I left shutter speed high and changed the lens aperture instead.