This is another shot of the Pittsburgh cityscape from my photo shoot at Mt. Washington a few days ago. It is actually a combination of two exposures (one for highlights and one for shadows) for reducing contrast, a technique known as High Dynamic Range or HDR. The problem is that our eyes can see a much greater tonal range than a digital camera can record. By combining two or more images, one can extend the apparent tonal range of the final image. I’ve made this one look as natural as possible, but you can make some very surreal images using the same technique.