![]() Noise increases with higher ISO setting in the camera, with the length of the exposure, the color temperature, and different camera sensors and lenses. Similar in appearance to film grain, digital noise can result in visible artifacts in an image and is comparable to the background hiss experienced in audio systems. ![]() We refer to these random dots, white speckles, visible streaks, color stains, and degradations as digital noise.įrom a technical point of view, digital noise is the visual manifestation of a lower signal-to-noise ratio. In addition, the image quality may be compromised by the resulting image artifacts, loss of sharpness, or color degradation. In digital photographs, these pixels usually appear as random dots, speckles or stains. Photographing scenes where the light is very low can produce digital noise levels that can result in pixels which include more noise data than real photo light data.
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