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If you’ve ever taken a photo and it’s come out too dark or blown out with a large amount of light, the issue is most likely an incorrect exposure. Luckily, understanding proper exposure is simple enough with the exposure triangle concept.



What Is the Exposure Triangle?

an infographic explaining what the triangle concept is

The exposure triangle (or exposure value) in photography is a principle that determines the amount of light that reaches your camera sensor. The exposure triangle has three parts:

Whether with film or digital photography, in order to achieve a properly exposed photo, you need to make sure that all three elements are working in harmony. That means that if one element changes, the other two need to change as well.

What Is Shutter Speed?

an infographic explaining how shutter speed works

Also known as exposure time, this is how long the camera shutter is open and the digital sensor or film is exposed to light. Shutter speed is expressed as a unit of time: 1/100 means that your shutter was open for 1/100th of a second. Shutter speed allows you to freeze or blur a subject in motion.

What Is Aperture?

an infographic explaining how aperture works with relation to exposure triangle

This is how big the opening is that lets light into your camera. Your aperture is determined by your camera lens, and is measured in F-stops. The larger the f-stop number, the smaller the opening is, and therefore, the less light it lets into the camera. For example, f2.8 allows twice as much light into the camera as f4, and 16 times as much light as f11. In addition to the b