Each of these 30 second exposures were not color-corrected or enhanced. Using the "Auto White Balance" setting on my Nikon D4s - I just let the colors fall where they did. Shot with a 300mm f/2.8 lens. I love shooting long exposures of cars traveling at night. Add the compression that a really long lens provides and the outstanding noise reduction of the latest Nikon flagship DSLR camera bodies - and you can have some creative fun. I used the camera's timer to ensure that I didn't vibrate the body any during the exposure.