Canon has released firmware v1.1.0 for the EOS 5D Mark II. It enables manual control of ISO, aperture and shutter speed while the camera is set to capture video.

Canon EOS 5D Mk II video firmware
More information
- Links to download firmware v1.10
- PDF manual about how to use the new features in English/French/Spanish
- PDF manual about how to use the new features in Japanese/English/Chinese