Time lapse photography is one of those tricky things made simpler by digital camera technology. You still need a system for triggering image capture in meaningful increments. GBTimeLapse handles all the image capture for Canon PowerShot users, by controlling the camera over USB and grabbing shots with your computer in an unattended setup. Use the software to capture blooming flowers in your home or the changes of a particular section of your backyard overtime. Once the camera is setup, you don't need to worry about getting the location right to track changes over time; simply connect camera to computer and let the hardware do all the work.