When light enters your eye, it gets refracted and goes through the lens and gets focused on the retina at the back of the eye. The retina then sends out a message through the optic nerve and the brain interprets this.
Photography works in a similar way. Cameras use a lens to focus visible light onto a light sensitive film or a electronic sensor.
Aperture- The aperture controls how much light enters the camera.
Shutter speed- Shutter speed determines how long the film or electric sensor is exposed to the light.
By varying the aperture and the shutter speed, the photographer can control…