Definition
The exposure triangle is the fundamental relationship between the three camera settings that control image exposure: aperture, shutter speed, and ISO. These three variables work interdependently — changing one requires compensating with another to maintain proper exposure. Understanding the exposure triangle is essential for any creator shooting in manual mode, as it determines not only brightness but also depth of field (aperture), motion blur (shutter speed), and image noise (ISO). Mastery of the exposure triangle separates technically competent videographers and photographers from beginners relying on auto mode.