How to Take Better Night Photos
DIY photography Web site Photojojo has compiled a series of tips for aspiring night shooters. It might take a little bit of work and planning, but you can shoot great photos at night. The article goes through various approaches you can take -- using your camera's Night-Portrait Mode, being the most obvious -- and helps you sort through what might be most appropriate for your particular situation. It covers (in minimal detail) high ISO settings (the digital equivalent of using different-speed film on analog cameras), as well as motion and color tips.
Our favorite tip, however, is the last one.
A quirk of physics dictates that unfocused points of light in a photograph take on the shape of the aperture. You can make a lens hood with a specially-shaped aperture (a heart, for example) and turn all the points of light into that shape.Now, young photographer: go forth, and bokeh. [From: Photojojo]
It's really easy, super cheap, and lends an unexpected "how-did-you-do-that?" touch to night photos. Make any shape you want: stars, ghosts, butterflies. You can even buy specially-shaped hole punches at craft stores.