"In image processing, computer graphics, and photography, high dynamic range imaging (HDRI or just HDR) is a set of techniques that allows a greater dynamic range of luminances between light and dark areas of a scene than normal digital imaging techniques." - WikipediaA technique created back in the 1930's has become very popular in the work of digital artists today. This amazing process of layering multiple images allows the photographer to achieve a greater range of tonal detail. The images that are created are surreal becuase there is nothing else that can produce this amount of detail. HDR photographs are made using the same image multpile times, but with multiple exposures too. This creates a dynamic range that can't be created within a camera. The only way to make a successful HDR image is by using a tripod, it would be impossible to capture the same picture multiple times. The guidelines below will help the artist capture a usable series of pictures."It is essential that the darkest of these exposures includes no blown highlights in areas where you want to capture detail. The brightest exposure should show the darkest regions of the image with enough brightness that they are relatively noise-free and clearly visible. Each exposure should be separated by one to two stops, and these are ideally set by varying the shutter speed." HDR is new to the art world and like other techniques, sometimes it is overdone. HDR has a purpose and it should not used for everything!
This is the first time I have ever looked at HDR photographs and I would love to have my images look this sharp. Although I strive for this beauty within my work, I have to say that I like the realistic factor in my photography more. I don't want my work to look as surreal as HDR images do. It is a technique i definitely plan on trying in the future.
http://www.cambridgeincolour.com/tutorials/high-dynamic-range.htm
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