Dettifoss - Iceland (and Europe's) most powerful waterfall. Taken at 5am, this was a shot I'd seen the first day I arrived, but it took three days to get the right lighting. I composed with the power of the waterfall in mind, so wanted to include the distant canyon that it has carved out, as well as the flow-lines of the fall itself. Thirty seconds at f/18 allowed the sense of movement, and the lighting was controlled with a three-stop ND grad over the top part of the sky. Hope you all like it! Thanks, James