HDR (High Dynamic Range)
High Dynamic Range, or HDR, is a digital photography technique whereby multiple exposures of the same scene are layered and merged using image editing software to create a more realistic image, or a dramatic effect. The combined exposures can display a wider range of tonal values than what the digital camera is capable of recording in a single image.
With these images, 3 exposures were taken of the same scene; metered exposure, 1 stop under and 1 stop over metered. The 3 images were then blended together in specialist HDR software, in this case Photomatix, to create the HDR effect.