exposure value scale
/ɛkspˈəʊʒə ˈvaljuː ˈskeɪl/
n
English · exposure value scale中文 · 曝光值刻度Español · escala de índice de la exposiciónFrançais · échelle d’indice d’exposition
意味：Graduated scale that shows the amount of light to which the film should be exposed.