What is an exposure meter?

An exposure meter, commonly referred to as a light meter, is a crucial tool in photography that measures the intensity of light in a scene. This measurement helps photographers determine the appropriate exposure settings, which include aperture, shutter speed, and ISO, to achieve a well-exposed image. By assessing the light levels, the exposure meter provides readings that inform the photographer about how to adjust their camera settings for optimal results, ensuring that images are neither too bright nor too dark.

The other choices do not accurately represent the function of an exposure meter. A device that captures images automatically does not involve measuring light; instead, it simply takes pictures without the input of the photographer’s manual settings. An accessory that enhances camera performance refers to equipment that may improve functionality or quality but does not specifically deal with light measurement. A type of lens used for wide-angle photography pertains to the physical components of a camera system, focusing on focal lengths and composition rather than exposure measurement. Thus, the correct understanding of an exposure meter is vital for achieving precise and artistically compelling photographs.