![]() Many smartphones have a built-in HDR feature performing the process in a automated way for photo capture. The term "HDR" may also refer to the overall process of capturing HDR images from multiple exposures. HDR is useful for recording many real-world scenes containing very bright, direct sunlight to extreme shade, or very faint nebulae. ![]() Combining several different, narrower range, exposures results in an image with a greater dynamic range than what is possible by taking one single exposure. The ratio between the maximum and the minimum of the tonal value in an image is known as the dynamic range. Outside this range, no features are visible because everything appears pure white in the brighter areas and pure black in the darker areas. Images captured by cameras allow differentiation only within a certain range of luminosity. In photography and videography, multi-exposure HDR capture is a technique allowing to capture high dynamic range (HDR) images by taking and then combining several different exposures of the same subject matter. Kentigern's Church in Blackpool, Lancashire, England Tone mapped high-dynamic-range (HDR) image of St.
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