Pre-release capture

Pre-release capture (Nikon's name; also called Pre-continuous shooting (Canon), Pro capture (OM System), Pre-Capture (Sony), Pre-Shot ES (Fujifilm), and Pre-Burst (Panasonic)) is an option on digital cameras. It allows pre-recording of a number of images before the shutter button is fully depressed, along with a number of images after. This aids in capturing a picture of a fast-moving, unpredictable subject, such as a snake's tongue, a baby's smile, or a lightning bolt.