Maybe you haven't heard about it, but there is a way to pimp your Canon camera firmware with Magic Lantern and get new features for free.
Magic Lantern is a free software add-on that runs from the SD/CF card and adds a host of new features to Canon EOS cameras that weren't included from the factory by Canon.
Just download the tool from the website and put it on your SD/Compact Flash card:
The list below summarizes some of the new feature you get when using Magic Lantern. A full list of all features and a more detailed description can be found on the original website of course.
The feature I like most is focus bracketing/stacking. It allows you to let the camera take a set of pictures and adjust the focus points automatically between the image. When combining these individual images, e.g. with help of the Photoshop stacking function, you can get one really sharp picture.
The following photos shows a Canon 5D Mark II camera with Magic Lantern installed. You can open a new menu with all the advanced features by just pushing the Del button.
Many thanks to Trammell Hudson who originally reverse engineered its firmware for the Canon EOS 5D Mark II in 2009 and all the other people involved in this project! You all did a great job! Further details can be found on the Magic Lantern website or on the Magic Lantern Wikipedia site.
Have you any experience with Magic Lantern on your Canon camera? Do you know further tips or alternatives to Magic Lantern for other cameras? Feel free to write a comment.