That's a most excellent camera! I've got it's little brother, the S90 (same sensor) and the photo quality's fantastic. :thumbup: Right proper versatile cameras. And then stick on CHDK and you open up a whole new world of extra functions 😃
http://chdk.wikia.com/wiki/CHDK
Dead safe to try out. You copy the app to the memory card and then boot your camera from it. By default, it'll only boot the camera's firmware and you have to choose to boot CHDK. If you don't like it, delete the boot file from the card.
Not to mention, other addons to fit lenses, filters, etc:
http://www.lensmateonline.com/newsite/G10.html