Aperture, Shutter Speed, and ISO While setting out on some self-motivated education about the three fundamental elements of exposure: aperture, shutter speed, and ISO, my quest became easier when I found fantastic, royalty-free, images to share while visiting www.pexels.com. Aperture Lingo Photographers often refer to the camera’s aperture in f-stops. When first learning how to use the manual mode on your digital camera, it can feel really confusing. Together with shutter speed, aperture determines how much light can reach the lens. Aperture Quick Tips: A wide aperture or opening equals more light. A narrow aperture or opening equals less light. […]