Demo of the audio level meters in the Magic Lantern firmware (formerly known as the 5D Mark Free). The AGC is turned off and the audio meter is calibrated from -40 dB to 0 dB with 5 dB tick marks, but the ballistics are not great. There are also full-time 16:9 crop marks overlaid on the video to help compose shots. Eventually we'll have selectable menus for the crop marks, the peaking speed and other features.
This initial proof of concept shows that we're able to run our own code on the camera and that we can add new features to it. For more details on the Magic Lantern project, see the forum posts: cinema5d.com/viewtopic.php?f=14&t=2494
There is a new feature: Zebra stripes! vimeo.com/4858670