digital Photography School has a cool article on how to use Slow Sync Flash to create cool photographs.

When shooting with a subject in low light situations you generally have two options; either to shoot with a flash or to shoot with a slow shutter speed.

Flash usually leaves you with a sharp, but brightly lit up subject while losing a lot of the background ambient (color and detail). A slow shutter speed requires the subject and photographer to make no movements, or the result will be a blurry image.

Slow Sync Flash image by smokingmonkey

Slow Sync Flash image by smokingmonkey

Slow Sync Flash is a function found on many cameras that tells your camera to shoot with both a longer shutter speed as well as firing the flash. This means you get the best of both worlds above and can both get a relatively sharp shot of your main subject as well as get some ambient light from the background and foreground.

Read the Slow Sync Flash article @ dPS for more information, and check Flickr for more images.