Photographing Horseshoe Bend can be tricky. It involved getting very close to the edge, and you will need a very wide angle lens to be able to capture the entire shape.
This picture taken by Paul Reiffer does a great job of showing the difference in viewing area between a iPhone 4S and the Canon he was using.
Different times of day will have dramatically different lighting because of the depth of the canyon. This series of photographs will give you an sense of what the light will be like at each time of day. Brian Klimowski -Tips from the pro’s – Sunrise to Sunset at Horseshoe Bend