Long exposure photo means shooting or exposing for long duration. Longer the shutter speed, more details are captured with different combinations of other factors such as aperture and ISO etc. If not calculated correctly, photos may become over exposed and will turn white. This is generally done to capture stars and star trails. If shooting during day time, ND Filters are applied in the front of the lens to compensate for amount of light entered. Subscribe for more long exposure shots of night and day from a human life.