Please help! I started doing HD recording with my canon 7d, but I get a lot of noise while recording a video in low lighted environment (mostly indoors). I have to start off by saying that I'm only a beginner and I just managed to reduce noise in still shots by shooting at a longer shutter speeds with ISO100... But this method is not applicable for video.





I use 17-55mm 2.8 and here's the settings I've tried (all manual):


Aperture - 2.8
Shutter - 30
ISO tried 100 (comes out very dark, noise not visible) and up to 2000 (bright, but lots of of noise)


So any advice as to how I can eliminate noise for indoor videos? Maybe it is done at post-productions level? Or maybe I should use filters?! I never used any... anybody wants to enlighten me what they are for? UV? Polarizing? ND??? Thanks so much! =)