Starting off with aperture meaning the opening of the lens. If it were higher it would give off not so much openness if it were lower it would give much more openness. Shutter speed is the time span that the film in the camera presented to any light taking a picture. ISO speed has power over the camera’s vulnerability of its detector. Camera modes have several exposure modes considering Manual identify the aperture, ISO and shutter speed nevertheless of whether these values lead to the right exposure.