Coming into Zion, photo by Harold Davis. View this image larger.

Looking down at Zion Canyon, Utah in the bright spring sunshine, it was clear to me that I couldn’t create a single exposure that would capture the dynamic range from the deep, black shadows in the foreground to the white clouds in the background. So I made a number of different exposures at a constant aperture, bracketing the shutter speeds, and combined the different exposures by hand in Photoshop to create a single image with greater dynamic range than any one of the individual captures.

It was hard to concentrate on image making with the boys running around like maniacs on a rock platform with an unfenced thousand-foot exposure, but as you can see I managed.

22mm, three captures at shutter speeds between 1/200 of a second and 1/50 of a second; each capture at f/10 and ISO 100, tripod mounted.