We present Magic Lantern, a free open software add-on for Canon DSLR cameras, that offers increased functionality aimed mainly at DSLR pro and power users. It runs alongside Canon’s own firmware and adds a very diverse set of previously impossible functionality. With downloads in excess of half a million and tens of thousands of registered users, Magic Lantern has become one of the largest examples of collaborative efforts of users hoping to get the most out of their devices… by hacking them. Being a free, open source non-commercial project developed by enthusiasts, Magic Lantern is not endorsed by Canon in any way. Apart from giving an introduction of the project and it’s collaborative structure, the talk will give an overview of features, focusing chiefly on photography work.