(tariff) Energy values computed from digital and/or analog inputs during variable periods and dedicated to energy measurement for billing purposes. Found on http://www.youngco.com/young2.asp?ID=4&Type=3
Metering is used to calculate the exposure from the existing light conditions. Includes Matrix Metering, Spot metering and Center-weighted metering. Found on https://www.encyclo.co.uk/local/22122