CHDK extends your Canon PowerShot features without overwriting the original firmware of the digital camera
With CHDK you can:
* Save images in RAW format
* Ability to run "Scripts" to automate the camera
* Live histogram (RGB, blended, luminance and for each RGB channel)
* Zebra mode (blinking highlights and shadows to show over/under exposed areas)
* An "always on" full range Battery indicator
* Ability to turn off automatic dark-frame subtraction
* a higher compression movie mode, and double the maximum video file size
* exposure times as long as 65 seconds
* exposure times as little as 1/10,000 of a second
* ability to use the USB port for a remote trigger input
Additional features:
* a depth-of-field (DOF)-calculator
* File browser
* Text reader
* Calendar
* Some fun tools and games
