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Nikon Image Bands
When I push the ISO up to 1600 on a D700 during a very warm evening (mid to high 20degrees) the image has four bands with slightly different background colour. This almost entirely disappears after images are stacked (flats, darks and dark bias). Same problem with camera on battery power and 12V supply so not power related. Heavily stretching images at ISO 640 will show a similar banding but much less distinct.Is this typical of the Nikon sensors or is there a setting I am missing.
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