Long Exposures and Hot Pixels
Long exposures during night photography

Long Exposures and Hot Pixels

When you take a very long exposure during a session of night photography, maybe 20 seconds or more, why does the camera take so long to process the image? This question came up during my latest Night Photography Workshop. The answer involves your camera's 'Long Exposure Noise Reduction' process. Long exposures can be both necessary and creative for night photography, but the camera processing time for each image can often take as long as the time exposure itself. Photograph by Philip Dunn Hot pixels Well, it's all about 'hot pixels', and how your camera deals…

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