Dramatic Natural Light
I have always liked using window light as a main source of illumination. It is soft, natural, and very flattering in many situations. Instead of destroying the appropriate highlights and shadows with flash, when you use ambient window light you retain the correct relationship between light and dark in the picture. I've used it for many types of subjects, including portraits, art objects, architecture and product shots.
Using the light coming in from a window usually requires a faster ISO to compensate for darker conditions and it often means using a tripod.
Showing Motion: Flash-Blur
I find that dancers are among the best subjects to shoot because of the colorful costumes and artistic movements of their bodies. But you can also photograph athletes in motion, race cars at night, flowers blowing in the wind in low light, horses running and many other things.
The best circumstance for flash-blur photography is in low light conditions: indoors on stage, outside under a thick cloud cover, or at night.
Article by Jim Zuckerman. To learn more about photography, explore the many online photography and Photoshop classes offered here at BetterPhoto.com.