One-exposure HDR

I took this picture of an old barn yesterday but my second exposure for the HDR was way off so I made an HDR image with only one, underexposed photo. How did I do it? Since I was shooting in RAW mode, I made two copies of the photo when I processed it: one with a very high positive exposure adjustment. Then I merged them back into one photo in Photoshop. Kind of feels like cheating doesn't it?

After (above), Before (below)

I'm so sorry you're in Redlands.

I took all of these in Seattle over the weekend. The macro leaf shots are all at 1/500", f/2.8, ISO 200 using a 100mm lens.

Fall Leaves - All One of Them

50mm, 1/15" at f/4.5, ISO 400

50mm, 2.5" at f/8, ISO 400