I eventually had a play with the Videorbits thing I mentioned last time this came up, and it turns out that while it will do more-or-less what it says on the tin, it's extremely not ready for prime-time. Its hunting for overlap is aimed at video, and so only works if the overlap is almost total (like, 95% or more). If your overlap is less than that, you have to give it a hint as to where to start hunting. These "hints" are conveyed by passing a series of eight numbers on the command-line -- numbers which apparently form some kind of transformation matrix, but aren't documented.

Plus, it makes no attempt to correct brightness, and although my new Olympus camera has an exposure lock mode for panoramas, that panorama was taken with Hugo's Canon, which doesn't (or at least I couldn't find one).

Peter