- size (it's really small)
- ISO (it likes to shoot at high ISO, though ISO1600 is not used in the Auto ISO mode)
- focusing speed (quite fast, and i've not yet had an occasion where it didn't get a lock)
I bought a 2GB xD card at S$33, and I now have 600-plus photos capability, as compared to the 7 or so on the internal memory. Not sure if the battery can shoot so many photos though, it's like a piece of bubblegum...