An amazing place!... Not only the canyons but the whole region with the river, the colours of Lake Powell..... And I was lucky enough to be near Page for some hot air balloons! For the Canyon itself I used a 5D with 16 - 35, iso200 and manual focus. Self timed shutter release and exposures. I perched the camera on a small virtually disposble tripod extended such that the camera was about 2ft off the ground. Compared to others with huge tripods and hasselblad cameras and digital backs I didn't take up much room and could set up in out of the way places so to speak. I was on the 2 hour photographers tour and my approach was to wait for clear moments and usually others were reasonably accomodating. My time there though was late october so no beams and not so many people. People moving through on long exposures can add to the etherealfeel in the final image. Exposure range can be a bit of a challenge, if you see the sun (or sun stars) you will have dynamic range problems. I didn't lens change and although dusty, I didn't have a problem and the shots I had always hoped for. People using flash didn't help matters..... Gotta go back and see some of the lesser known ones! Enjoy the moment.