Softhacking Cannon digicams

[Ravenwood]

This is a drop-in firmware update that works for Cannon Cameras.  It does a whole bunch of cool stuff like allow shooting in RAW format.

It doesn't replace your existing firmware, it just loads beside it, so to undo it, you just delete it from the memory card.

You have to load it each time you power on your camera, but if your have a 4GB or smaller card, then you can make it autoboot when you power-on.

http://chdk.wikia.com/wiki/CHDK

Here's the feature list:

Shutter-priority (Tv) exposure - via shutter value override feature
Aperture-priority (Av) exposure - via aperture value override feature
Shooting in RAW, with RAW Average, RAW Sum, and RAW Develop features
Live histogram (RGB, blended, luminance and for each RGB channel)
Zebra mode (a live view of over and under-exposed areas of your picture)
Depth-of-field (DOF)-calculator, Hyperfocal-calculator with instant Hyperfocal and Infinity focus-set, and more
Battery indicator
RAW and Video space-remaining gauges with custom low-limit alerts
USB cable remote shutter release
Motion-detection trigger - automatically fires camera on motion detection. (Fast enough to capture lightning strikes.)
Customizable high-speed continuous (burst) Shutter-based (Tv), aperture-based (Av) and ISO-based exposure bracketing (unlimited shots)
Focus bracketing (unlimited shots)
99 constant bit-rate and 10 constant-quality video compression levels
Elimination of 1 Gig video-size limit
Zoom during video function (for cameras without this feature)
Shutter, Aperture, and ISO Overrides
Ultra-long shutter speeds - up to 64 seconds, and much longer on some cameras.
Ultra-fast shutter speeds - up to 1/10,000" and higher
High-speed Flash Sync at all speeds up to 1/64,000 second (even faster in some cameras)
Custom user-editable visible Grids for framing, cropping, and alignment
File browser
Text reader
Calendar
Some fun tools and games :)
Fully customizable CHDK display, info placement, user-colors, fonts in menus, etc.
Custom CHDK user menu (for instant recall of up to 10 favorite functions)
Scripts execution - including exposure bracketing, focus bracketing, intervalometer and more)
And other features too numerous to mention here. See the CHDK Firmware and Allbest Firmware usage pages for a more complete overview.

Here's the current build list, which shows models and firmware versions.

http://mighty-hoernsche.de/

[Silvermink]

Doesn't seem to support my ancient S40, alas. :) Though Katherine's really the only one that uses it nowadays since I mostly shoot with my E-1.