UPDATE: The Canon 5D MKII DSLR 2.0.3 firmware update was originally released with an audio bug, then pulled by Canon, and now they’ve released the 2.0.4 firmware update which is supposed to fix those bugs. I’ve updated a pair of 5Deuces with 2.0.4 and am testing out the audio now. So far, everything looks peachy.
The 2.0.3 and 2.0.4 firmware updates add proper 24p/25p (and make 30p proper at 29.97), manual audio levels, and a video histogram (available pre-record only). Get the new firmware at the link above.