ecause I was on a boat on Tonle Sap Lake, I couldn't use a tripod. Since the boat was moving, I chose a 20-35mm lens, at 20mm, which gave plenty of sky and reflection in the water, in turn allowing a shutter speed of 125th to freeze a sharp image. A circular polarizer was used to increase the dramatic contrast of sky and clouds: the Nikon polarizer is designed thin, so as not to cause vignetting in the very wide-angle lenses.

Tonle Sap Lake, Cambodia