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![]() ![]() ![]() If the dynamic range of a scene is high enough, anything outside the range of the camera’s sensor will either be blown out to pure white (in the case of very bright areas) or crushed to pure black (in the case of very dark areas). Cameras only capture a limited dynamic range of light. A low dynamic range scene has relatively uniform light across the scene where the brightest parts of the image are not much brighter than the darkest parts of the image. A high dynamic range scene has extremely bright highlights (such as the sun) and extremely dark darks (such as a fully shadowed black rock). The full range of light of a scene, from the darkest darks to the brightest brights. Higher signal-to-noise ratio is the best way to improve image quality. Collecting more light is the best way to increase signal-to-noise ratio. The higher the signal-to-noise ratio, the higher the quality of the image. The ratio of signal to noise in an image. In general, the more noise, the lower the quality of the photo. Some noise is random with every shot (shot noise) and some noise is produced consistently by the camera’s sensor (upstream read noise) or produced by the electronics after the sensor’s signal has been amplified (downstream read noise). Noise is usually generated by heat or imperfections in the behavior of the electronics of our digital cameras. Noise is interference appearing as speckled grain that obscures the signal and thus the details of the photograph. ![]() Noise is the part of the photograph that we do not want. ![]()
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