horrible noise in the background

[zagist]

Hi everybody,
I shoot a video with Canon 5d mark II in RAW mode

f 3.2
ISO 125
shutter 50
WB 6600k
Transcendend CompactFlash 1000x 32gb

I converted  RAW to dng sequence with Rawmagic, and I exported the final prores 444 video just does it was with Davinci resolve. As you can see in the link to the image below, there is an Horrible noise in the background. What did I do wrong?
can anybody help me? thank you very much.
https://imageshack.com/i/id95QwKBp