HDR imaging ( High Dynamic Range imaging)

In image processing, computer graphics, and photography, high dynamic range imaging (HDRI or just HDR) is a set of techniques that allow a greater dynamic range of luminances between the lightest and darkest areas of an image than standard digital imaging techniques or photographic methods. This wider dynamic range allows HDR images to represent more accurately the wide range of intensity levels found in real scenes ranging from direct sunlight to faint starlight.

The two main sources of HDR imagery are computer renderings and merging of multiple photographs, which in turn are known as low dynamic range (LDR) or standard dynamic range (SDR) images. Tone mapping techniques, which reduce overall contrast to facilitate display of HDR images on devices with lower dynamic range, can be applied to produce images with preserved or exaggerated local contrast for artistic effect.

HDR image can be done on your camera or using program like Photomatrix to simulate the effects of HDR.

Source :http://en.wikipedia.org/wiki/High_dynamic_range_imaging




Below is some picture i made using the Photomatrix Pro to simulate the HDR effects.

Before


After HDR post processing



Before


After HDR post processing