How to Hack your Canon camera's firmware with CHDK
Got a Canon Powershot whose resolution or functions are not cutting it for you? Then amp up its abilities - without flat out buying a new camera - by checking out this digital camera hack video. By modifying the camera's firmware you'll be able to add games as well as a manual mode for ultimate control of how you produce your images.
You'll be able to use RAW, ISO modes, shutter speed, and motion sensing.
This tutorial uses CHDK firmware.