HDR image. Eight images from the same shot ranging from -2 to +2 in half stop increments using Capture NX 2 from the RAW file. The WB set for 8000K when taking the shot. You may find for sunrise and sunset shots it's best to take your camera off Auto WB and set it manually, you can fine tune the WB in the RAW image during the processing stage using software that comes with your camera.