Shooting in the dark can be a hassle. Pushing the ISO, while often a necessity, can make your video noisy beyond repair. Gizmodo posted a nice a nice ISO comparison video by Andrew Schar to see how much noise is added as turn up the ISO. I’ve had many a shot ruined by noise. Seeing this video clarified for me how far the ISO can be put before its too far gone.
For more info, check out what Andrew has written about the whole process over at his Vimeo.