Photograph: Water and Granite, Tuolumne River

Water and Granite, Tuolumne River

Posted on 30 November 2011

Water and Granite, Tuolumne River

Swift water flows over granite along the bank of the Tuolumne River, Yosemite National Park.

In this section of the Tuolumne River – as in many other places throughout the Sierra Nevada – the river passes through a steep section and across granite slabs that span the full width of the river. As the water flows over the granite it forms constantly changing patterns of rock and whitewater that can only be predicted in general ways. The spot included in the photograph was right along the edge of the river, and you can see the transition between the diminished flow along the bottom edge and the faster and more abundant water in the main channel beyond.

Part of the fun of shooting this sort of subject – and shooting it is a pleasant way to spend an hour along the river – is in trying to find workable compositions in such a changeable subject. And making it even more “fun,” the shutter speed becomes an important decision as it determines just much the image is affected by motion blur and how much of the scene is stopped. Fortunately, digital cameras make this process just a bit more predictable and productive, since they allow the photographer to quickly see the result of composition and shutter speed choices and verify whether or not the educated guesses were correct, and to see just how the infinitely variable and unpredictable patterns of flowing water come together at the instant of exposure.

Text, photographs, and other media are © Copyright G Dan Mitchell (or others when indicated) and are not in the public domain and may not be used on websites, blogs, or in other media without advance permission from G Dan Mitchell.