I was experimenting with using HDR technique in low light environments. The reason I choose to do this was to be able to see a greater range light. If I had used just a long exposer I would had to choose between losing the shadows or blowing out the highlights. Using many exposers I was able to capture a greater range of light a single shot is capable of displaying. I used 6 different exposers to create this image. Exposers of ISO 200 from, f8@4sec to f8@30sec. An artifact of this was the burring of the tree in the upper left area. I used the canned CS3 HDR tool. I might revisit this image but using this tutorial