A reflected light reading is an exposure measurement taken from the cameras position, with the metering sensor directed toward the subject. Unlike incident light meters, which measure the light falling on a subject, reflected light meters measure the light bouncing off the subject, providing an exposure value based on the subjects brightness.
This system is used in most through-the-lens (TTL) metering cameras and in handheld meters without a diffuser cone. The reading often includes a metering angle in degrees, helping photographers assess how much of the scene contributes to the exposure. Reflected light readings are essential for accurate exposure in diverse lighting conditions, especially when photographing subjects with high contrast or variable reflectivity.