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Learn Photography

Beecher's Handouts >

8 – Exposure


Exposure is the amount of light striking the sensor.

Three Controls

The amount of light is controlled by using three controls.

1 – ISO

ISO is a measure of how sensitive the sensor is to light.

2 – Aperture

The aperture is an iris-like device in the lens.

By changing the size of the aperture, the intensity of the light reaching the sensor is varied.

Aperture is also known as aperture, f/stop, and rarely, diaphragm.

3 – Shutter Speed

The shutter consists of curtains or blades that open and close.

The shutter can open and close for different amounts of time-shutter speeds.

Let's look at ISO, aperture, and shutter speed.