When it comes to Video capture on the Nokia Lumia 800 we were quite disappointed, since it's not possible to change zoom while recording, which seems mad.
To make things worse, continued press zooming is achieved by step changes between six levels, which feels very clunky.
Video quality in daylight provides good colour depth and sound, but the speed of response to changes in brightness and focal range is very poor. Although the image quality improves as expected when switching from VGA to 720p, the speed of response remains poor.
In low light, the Nokia Lumia 800 struggles to focus even more. The dual LED flash can be turned on permanently while videoing, enabling focus and colour settings to achieve closer to daylight quality.