For those who own a Canon P&S camera, (like Canon PowerShot), with a relative simple hack, you can add features available only to DSLR cameras such as RAW image recording and live histogram feedback.
The hack requires modifying the firmware (software) inside the camera, but it can be done easily and without any risk to the camera.
Here is the link
9 Kick-Ass DIY Projects to Get Your Hack On - Page 4 | Maximum PC