Yeah, I noticed that too. I don't think the tripod moved, it was on a tile deck made of 16" thick concrete, and I used the self-timer to make the exposure. More likely I just did an inept job of focusing, it's hard to do in the dark, I don't remember now if it was auto-focus or manual focus.

Next time there's a full moon I'll repeat the process, much more carefully. This was just a snapshot that turned out better than I expected. I think a three-shot panorama in portrait mode with more zoom, smaller aperture and better focusing will do the trick...

Hmmm... shooting film you get what is known as reciprocity failure with long exposures. Does this happen with digital photography as well?

tanstaafl.