Hi, I love this phone very much, but... I have a problem with it. When I want to take a photo, its perfect in light and dark... When I want to take a video, its perfect... in light, I cannot explain it, so I show you some pictures... (sorry for bad english)
Also, I don't know if it applies to your phone or not, but on my 920, video taken in low light comes out much better than the live viewfinder would show.