What methods have scientists invented to shorten the time for taking photos?

It takes a long time to take a photo in the early days. In 1871, eastman, an American, invented the gelatin dry printing method, and used silver bromide instead of silver iodide to make a dry printing plate on the glass, which can greatly improve the sensitivity and shorten the exposure time to a fraction of a second or even shorter. In order to control the exposure time, people installed a shutter in the camera, and later improved the lens, aperture, body and other components.