光圈刻度
/ˈlɛnz ˈapətʃə ˈskeɪl/
n
English: lens aperture scale · 光圈刻度
English · lens aperture scaleEspañol · escala de abertura del diafragmaFrançais · échelle d’ouverture de diaphragme
释义：Graduated scale that controls the diaphragm’s opening; it is measured in f-stops and a high f-stop indicates a small opening.