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胶片摄影中EV值到底代表什么？ - 知乎 EV stands for "exposure value" and is a technical term in photography that refers to the amount of light captured in an image 那么我们就是一个在给定的胶片感光值下，光圈与快门的关系。 对于我们日常摄影来说，给定的ISO，比如ISO100，测光6区内，光圈与快门固定后的体现值。