I usually do not comment about firmware upgrades for photo cameras. What about today?
Actually, this firmware is not from Canon. The Magic Lantern firmware has been designed by Trammell Hudson but it is usable on your Canon EOS 5D MkII.
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
Magic Lantern firmware introduction from Trammell Hudson on Vimeo.
Source : Magic Lantern firmware.