Digital Lux Meter, Power Source : Battery

A light meter is a device used to measure the amount of light. In photography, a light meter is often used to determine the proper exposure for a photograph. Typically a light meter will include a computer, either digital or analog, which allows the photographer to determine which shutter speed and f-number should be selected for an optimum exposure, given a certain lighting situation and film speed.   LX 101: 1-50,000 Lux, 2000/20000/50000 LX 1330A: 1-1,00,000 Lux, 2000/20000/100000 Rotating Head.