Canon EOS 40D hack lets DSLR record video without a cable tether. The hack involves coding new software that locks up the mirror, which denies the camera the ability to autofocus. Sure, it’s not a HD video output, but it’s damn neat. Maybe we’re finally advancing to the era where hacking these devices won’t be necessary to enable video capture, something we should have had out of the box years ago, like iPhone and iPhone cameras with built-in video capture.”]
Source: https://gizmodo.com/hacker-makes-canon-eos-40d-record-video-5054003