Originally Posted by
Tawm
I got my mum's 8mp Canon PowerShot A720 and installed a custom firmware which boots off the memory card and you get all features, sometimes more, of any D-SLR.
CHDK is what its called, you find the right one, put it onto the memory card, lock the card, turn your camera on and it boots the firmware, but it still saves your images to the locked card. To boot back into the normal Canon firmware you just unlock the card or delete the files and reboot.
That is if you get a nice little Canon camera.