Separate Exposures
For your own experiments, please find below the nine exposures which form the basis of the comparisons presented here. They were taken using the auto-bracketing feature available on my Nikon D2H camera.
  1. balloons.tar.bz2 (bzip2 archive)
HDR Image
The high dynamic range image (in .hdr format) is available as well. It was created with Photosphere.
  1. balloons.hdr.bz2 (bzip2 archive)