Luminance meter

A luminance meter is a device used to measure the brightness of a light source or surface as seen by the human eye. It quantifies the amount of light emitted, reflected, or transmitted from a specific area in units called candela per square meter (cd/m²). These meters are essential in various fields, including photography, film production, and lighting design, as they help ensure proper lighting conditions and create the desired visual effects. By providing accurate measurements, luminance meters assist professionals in making informed decisions about lighting and exposure.