In the article "Digital Imaging - Flats and Darks Explained!" in the Projects and Articles section, relating to Flats, I don't understand this sentence:
Quote:
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The main aim is to get a flat field that has an average pixel value of about 30% of the maximum pixel value that your camera is capable of. For a 16-bit camera, this would be approximately 20,000. Most image processing software will give you the average pixel value in an image so this value is generally easily obtained.
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I'm not sure what "pixel value" is. Is this speaking about resolution?