"IMO, this is the best low light footage I've ever seen in a prosumer/consumer camcorder."http://www.youtube.com/watch?v=I0anyvITTbE
I am surprised by this comment. This video is a very bad example of night-time videography and says little about video under dim light.
1. There are blown highlights in every shot - almost all the lighted objects are overexposed and have strong white blown parts. The photographer has no clue how to take video under the conditions shown (which are very difficult, given the scene has very bright lights and unlit parts). Those ribbons in the first scene do not have white stripes, that is the light blowing out the color because of overexposure. Those are really bright lights.
2. Almost all of the the vivid colors are in brightly spot-lighted material (large ribbons,. umbrella, etc.) or have direct backlighting (lanterns). Any camcorder will make directly-lighted, by very bright lights, strongly-colored objects look colorful. The real issue is the color in the objects/subjects not directly lit. They are so dark, one cannot see any color - just like in a real night scene. Indeed, at night, unlit objects do not display color to a naked eye and they will not, if appropriately exposed, show color no matter how good the camera is.
I am NOT, repeat NOT, arguing that the Canon HF G10 is not the most capable camcorder in low light. I am commenting on what this video contributes to that claim. Mostly, though, I am concerned about the bad craft, not the equipment. Let's curb our enthusiasm.