Aperture is the opening in a camera lens through which light passes to enter the camera. It is one of the three components of the "Exposure Triangle" in photography, along with ISO and shutter speed. Aperture controls the amount of light entering the camera and affects the depth of field of a photo, which is the range between the nearest and farthest objects in focus within a picture. A wide aperture (low f-stop values) allows more light to enter the camera and produces a shallow depth of field, which blurs the background and makes the subject stand out. This effect is known as bokeh and is often used in portrait photography. A narrow aperture (high f-stop values) allows less light to enter the camera and produces a larger depth of field, which keeps more of the frame in focus and is ideal for group shots or scenic landscapes. Aperture also affects the exposure of an image, making it brighter or darker. A photographer can adjust the size of the aperture either on the lens itself manually or through the cameras electronics.