The story behind the model photo shoot

from flickr user Jeremiah Peterson
While this photo could be passed by as "just another retouched photo of a couple models", the photographer's story behind creating this photo is what truly caught my attention:

Shot this on a tripod, then moved the subjects and shot 7 pics in that same location at different exposures to create an hdr. Loaded the hdr as the background in photoshop, then set the other shot with the subjects on top, masked, adjusted etc... This is a composite, but they were actually standing in that spot. So it's not really a composite in my book I guess.