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Higher ISO indicates greater sensitivity. NOTE: A higher ISO may produce unwanted “noise” in a picture. Exposure Compensation— adjust the exposure. If the picture is too light, decrease the setting; if it’s too dark, increase the setting. Shutter speed— control how long the shutter stays open. Aperture— (also known as f-stop) control the size of the lens opening, which determines the depth of field. ¦Smaller f-stop numbers indicate a larger lens opening; good for portraits and low-light conditio