I usually do not comment about firmware upgrades for photo cameras. What about today?
I don’t know how he did that. I am sure that it voids your camera warranty. But, it brings impressive features, which are exactly what is missing from the Canon firmware and what serious film-makers needs from their camera.
- On-screen audio meters
- Disabled Automatic Gain Control (AGC)
- Manual gain control
- Zebra stripes (for over-exposed zones)
- Crop marks for 16:9, 2.35:1 and 4:3
Source : Magic Lantern firmware.