I went over CHDK in another post, so here is a simple quick guide to actually getting it on your camera. This guide will get you started using CHDK. This guide assumes CHDK is already set up on your camera’s SD card. A Guide for that is here. Think ... Read More

What is CHDK? It's a firmware enhancement (I like that word because it's not a replacment) that work on many of Canons Cameras. CHDK gets loaded into your camera's memory upon bootup (either manually or automatically). It provides additional functionality beyond that currently provided by the native camera firmware. CHDK is not a permanent firmware upgrade: you decide how it is loaded (manually or automatically) and you can always easily remove it.