Nokia just shared 3rd video of its series of Nokia 808 PureView Photography Tips. The video shows how to take best images in low light condition. Have a look at the video
In Creative mode, you can select the ISO setting to be anything from 50 to 1600. The higher the ISO setting, the brighter the picture is under low-light conditions. It is also possible to set the ISO on automatic.
The best possible low-light performance is achieved when the camera is in PureView mode at 2/3, 5 or 8 megapixels. To allow exposure times of up to 2.7 seconds and to take “noise free” pictures in low light conditions, you can manually set the ISO low (e.g. 50). For the best results, it is recommended to use a tripod or similar support, or to select Auto ISO or Night mode.
Have you got your hands on PureView yet?