what is f in camera

In photography, the "f" in f-stop stands for the focal length of the lens. F-stop is a term used to denote aperture measurements on a camera. Aperture refers to the opening in a lens through which light passes to enter the camera. It is expressed in f-numbers like f/1.4, f/2, f/2.8, and so on. The aperture controls the amount of light that enters the camera lens, and its measured in f-stops. The diameter of the aperture determines how much light gets through and thus how bright your exposure will be. The f-stop, which is also known as the f-number, is the ratio of the lens focal length to the diameter of the entrance pupil. In simple language, f-stop is the number that your camera shows you when you change the size of the lens aperture. The f-stop setting, or f-number, helps establish the look and feel of your photo by determining the depth of field. It also helps you get a proper exposure.