Friday, October 06, 2006

HDR - Building Site

Here is my first attempt at HDR (High Dynamic Range) photography. HDR works by taking several exposures of the same scene, from over-exposed to under-exposed, and then using software to combine the exposures to bring out as much detail as possible in every part of the image.

High Dynamic Range refers to the range of light in the image. You can see in this Low Dynamic Range image (one of the three exposures used to create the HDR image above) that to get good definition in the foreground, the exposure has quite a lot of light, meaning the sky is way too bright. However, the trees are still too dark, as the camera is incapable of capturing a wide range of lighting in one image, as the dynamic range is too low. With the HDR image, (although far from perfect) you get good definition in all parts of the image, from the dark trees, to the lighter sky.

You can see lots more HDR in the Flickr HDR and True Tone HDR groups.

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