Light trails are fun and easy to create for beginners using with digital cameras and the results can look really professional. A light trail is created when the photographer uses a very slow shutter speed to photograph cars or other lit moving objects at night.
Equipment
First, you need some basic equipment. Besides your camera, you will need a tripod and cable shutter to eliminate camera shake and blurred images. A lens hood is handy to prevent glare on your lens from outdoor lighting, but it isn’t necessary.
Timing
Generally, you can photograph light trails any time of night. For a little splash of ambient lighting, though, you should take your photos just after the sun goes down or just before it comes up. The warm glow of the sun will add a little extra color and interest to the photo.
Also, try to choose a time of night when there is a lot of traffic. Right after sunset you will probably be able to photograph quite a bit more cars than at 2 a.m., for example.
Location
The best place to set up your equipment is a hill, fire escape, or window overlooking a busy street. An overpass can be good, too, as long as it’s not dangerous to set up there.
Make sure that your spot is as dark as possible, with the only bright lights coming from the cars themselves.
Getting the Shot
After you have the gear, the best timing, and the best location, the rest is easy. To achieve clear light trail, set your digital camera to night mode (an icon that looks like a moon) or ISO mode and turn off the flash.
Adjust your tripod so that you have a clear shot of your subject. If you don’t have a cable shutter, set your timer and press the shutter button. Step back and wait for your camera to take the picture.
Now review your image. Is there a nice light trail? If not, try these tips:
Make sure you take the picture when there are many cars passing by. One or two won’t make a good light trail.
Set your camera to Manual and adjust the aperture to a mid-range such as f/8 and your shutter speed to around 10 to 20 seconds. Increase your aperture one stop if your image is overexposed. If it is underexposed lower the aperture one stop.