The exposure triangle is the combination of the camera shutter speed, aperture setting and ISO. The camera's shutter speed and the aperture setting control the amount of light that reaches the camera sensor when you take a photograph. The ISO controls the sensitivity of the camera sensor to light. When applied correctly, these settings will enable a correct exposure to be achieved.

The exposure triangle can be used creatively to take correctly exposed photos with different aperture, shutter speed, and ISO settings. The exposure triangle is also used to take photographs in challenging light conditions, and also for creative image capture.