景深标尺
/ˈdɛpθɒvfˈiːld ˈskeɪl/
n
English: depth-of-field scale · 景深标尺
English · depth-of-field scaleEspañol · escala de profundidad de campo de visiónFrançais · échelle de profondeur de champ
释义：Scale that shows the zone of sharpest focus around the subject; this is a function of the diaphragm’s opening and the distance between the lens and the subject.