Arizona is one of the most beautiful states (if not the most beautiful) in the U.S. You could spend a year there and not see all the great areas to photograph.
Others have listed the top sites. I'm not sure if anybody mentioned Monument Valley in the northeast corner of the state, but its well woth the drive. Antelope Canyon in the Page area has some incredible eroded rock formations. As others have stated, the Grand Canyon and Sedona are "don't miss" sights. I prefer the North Rim of the Grand Canyon to the more heavily visited South Rim, but its a long drive around.
On our last visit I took a 7D with a 15-85mm standard zoom and a 100-400L for wildlife and isolation shots. When we go back I might rent a UWA zoom like the 16-35mm if I don't own one by then. I did lots of panoramas that turned out well however using the 15-85mm.
« Last Edit: April 09, 2013, 09:03:14 PM by bholliman »
Bodies: 6D, EOS-M
Lenses: Rokinon 14mm 2.8, 50mm 1.4, 85mm 1.8, 100mm 2.8L IS Macro, 135mm 2.0L, 24-70mm 2.8L II, 70-200mm 2.8L IS II, EF-M 22 2.0, EF-M 18-55mm, Extender EF 2xIII; Speedlites: 600EX-RT(2x), 430EX II, 90EX