The term "3-stop" typically refers to a specific type of camera exposure adjustment in photography. It indicates a change in exposure that is three stops brighter or darker than the original setting. Each stop represents a doubling or halving of the amount of light that reaches the camera sensor, allowing photographers to control the brightness of their images. In practical terms, adjusting a photo by 3 stops can be achieved by changing the aperture, shutter speed, or ISO settings. For example, if a photographer uses a camera with a lens that has an adjustable aperture, they can open it wider or narrow it down to achieve the desired exposure level.