A recent photo challenge that I often take part in had an interesting theme for November, Outside The Frame. The basic idea of the challenge was to get photographers to think about shooting subjects in a way that gave a strong message about what was not within the photo itself.
The above photo is one of my attempts to achieve a photo that meets the requirements of the challenge. I used a lot of negative space in the image to help the viewer see what was outside the frame. After all, from a purely photographic standpoint a standard light switch is not the most interesting subject. Instead the subject of the photo is actually the light that is coming from a bulb to the upper left. This example takes the idea of photographing the light to the next level, well sort of.