My wife and I were visiting the Grand Canyon in July 2012 when we lived in Arizona and I hoped for a beautiful sunset. The clouds started dissipating and it didn't look like it would be a nice sunset. There was a gentleman there with a medium format camera but he didn't stay since the clouds were dissipating but I thought it would be a good opportunity to use HDR to capture the sun as it set over the horizon.

I used a Canon 40D and a 10-22 Canon lens set at 10mm {16mm for 35mm equivalent) on a Flashpoint carbon tripod. The exposures were F20 at 1/3, 1/13 and 1.3 seconds at 100 ISO. The photos were combined in Photomatix Light and adjusted in Photoshop Elements 9.