Exposure metering is a technique used in photography to measure the amount of light in a scene. This measurement helps photographers determine the correct exposure settings, such as aperture, shutter speed, and ISO, to achieve a well-lit image. Cameras typically have built-in exposure meters that analyze the light and suggest optimal settings. There are different metering modes, including matrix metering, center-weighted metering, and spot metering. Each mode evaluates light differently, allowing photographers to choose the best option based on the scene's lighting conditions. Understanding exposure metering is essential for capturing high-quality photographs.