I shoot video in the clubs and most of the time i use either the hvx 200 or the canon hfs 20. i have no problem with these cameras wen it comes to digital noise due to low light. However, wen i attempt to use the 5d mark 2 no matter what i do, i always seem to get plenty of noise in the video, i see ppl use the 50d 60d and the 7d, i dont know how their footage comes out b.u.t im assuming its coming out better than mine. when i had this problem with the hvx or the hfs i just limited the agc to 9 and that solved the problem, no more noise. i dont know how to resolve this issue with the 5d it seems that the camera is boosting the iso or sumn in order to compensate for the low light however its just making things worse with the noise. Can someone pls help me????????