Wynne Wynne's Infallible Exposure Meter Light meter

Wynne's Infallible Exposure Meter represents a classic light metering device used to measure illumination levels for proper photographic exposures before the advent of built-in camera meters. These handheld meters were essential tools for photographers working with manual cameras and varied lighting conditions, helping achieve accurate settings for shutter speed and aperture. Known for their reliability and precision, such meters often used selenium or CdS cells and could be calibrated for different film speeds. The term 'Infallible' highlights the brand's marketing of dependable performance. Collectors and film photographers value these meters both as functioning equipment and vintage photographic artifacts reflecting early exposure technology.