Exposure Triangle

Destiny Blatchley

What is the "Exposure Triangle?"

The Exposure Triangle consists of three topics: Aperture, Shutter, and ISO. You will learn more about those three things as you move on.
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Aperture is a space through which light passes in an optical or photographic instrument, especially the variable opening by which light enters a camera.

That means that the larger the aperture, the less depth of field you will see. If you have a smaller aperture, your depth of field will be larger. To see a single item with a blurry background, use a high aperture. If you want the entire picture to be clear, use a low aperture.

The larger the f-stop (aperture measurement), you will have more depth of field but a small aperture. The smaller the f-stop, you will have a lesser depth of field but a large aperture.

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Shutter Speed

Shutter Speed is the time for which a shutter is open at a given setting. If your shutter is open for a short time, it does not allow all but a little bit of light to enter. If your shutter is open for a long period of time, more light will seep in.

You want to use a fast shutter speed if your object is moving, which will freeze your image, while if your object is moving, you want to use a slower shutter speed to blur your image.

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ISO is the sensitivity of your camera to available. If you set a high ISO, your picture will contain more light and be more grainy. If you set a low ISO, your picture will hold less light and be more sharp.

You would want to use a high ISO on a dark/cloudy day, while if the sun is shining, a low ISO would be best.

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Below is a video better explaining the Exposure Triangle

Understanding Exposure With The Exposure Triangle

Here are some links to help you understand Aperture, Shutter Speed, and ISO better