I have been using a Canon PowerShot S50 when doing investigations or just having a good ol' time ghost hunting. The camera itself is a great camera, and even though it's 6 years old, I still think it takes better pictures than most of the newer cameras.
Recently, I decided to buy a digital SLR camera. The main reason for doing this was so I can take picture of the city at night as well as having complete control over the camera's operations.