The Exposure Triangle

The Exposure Triangle

-The three primary components of a camera system that a photographer adjusts to control exposure. The tree variables interact to achieve the exposure value for each shot.

Three Components:

• Aperture: The larger the aperture, the more light strikes the image sensor and the greater there will be for acquiring shallow depth of field. A series of f-stops printed on the outside surface of ring , indicates the size of the aperture. Opening the aperture one full stop, doubles the size and the amount of light hitting the image sensor.

• ISO/ Film Speed: Increasing the ISO increases the light sensitivity of the image sensor, but the image becomes noisier and grainier. Each jump to a higher ISO number results in a doubling of the film's light sensitivity.

• Shutter Speed: The more you increase the shutter speed, the greater detail you can achieve when shooting fast action, but more light you will need for achieving proper exposure. Shutter speed influences how motion is captured by the image sensor.