The biggest lesson I have learnt in photography is that timing is everything. No matter how perfect your technique and equipment, if you arenâ€™t in the right place at the right time you simply wont get the shot. In the underground sandstone caves of Antelope Canyon, in summer I knew the sun would pass directly overhead at midday. As the time approached giving me my only opportunity for the shot, a narrow sliver of light beamed down through the keyhole and on to the sandy canyon floor below. At the precise moment I clicked the shutter, my Navajo Indian guide threw a handful of dust into the shaft of light. It wasnâ€™t until weeks later when I finally got to see the results of the shoot that I was able to see the ghostlike human form that had emerged,and I could only wonder if the ancient spirits of the canyon had been present with me that day.