Making pictures at nighttime can be challenging. Parts of a picture that are lit with street lamps or other lights are very bright compared to the darkness of the sky or the shadows under trees and porches. This scene is described as having a high dynamic range—the difference between light and shadow is very great. This is the reason we have HDR tools for photography. Let me show you how I used HDR techniques to make a picture at nighttime…..

Source: How to Use HDR for Nighttime Photography | Photofocus