Using two flash units dialed down to 1/64th power (to shorten
the exposure time to around 1/50,000th of a second) I was able to
freeze the motion of these hummingbirds that I photographed on a recent trip to
Utah. The photos show a Rufous
Hummingbird and a Black-chinned Hummingbird.
More details on how to photograph hummingbirds can be found in the bird
photography book that I authored for National Geographic (National
Geographic Photographing Birds).