如何从 CameraCharacteristics 测量 ISO(传感器灵敏度) [英] How to measure the ISO (sensor sensitivity) from CameraCharacteristics

问题描述

如何测量 CameraDevice ISO 值，我的意思是我需要类似的东西:

How to measure the CameraDevice ISO value, I mean I need something like:

cameraCharacteristics.get(SENSOR_SENSITIVITY)

在这种情况下，此函数将返回传感器 ISO 的值​​.

In this case this function will return the value of the sensor ISO.

我知道直接从 CameraManager 创建的 cameraCharacteristics 实例不会有这个值，我要问的是如何知道当前活动相机的 iso

I know that the cameraCharacteristics instance created directly from CameraManager is not going to have this value, what I am asking for is how to know the iso for the currently active camera

推荐答案

使用

   val range: Range<Int> = cameraManager.getCameraCharacteristics(cameraId)
        .get(CameraCharacteristics.SENSOR_INFO_SENSITIVITY_RANGE)!!
    val max1: Int = range.upper 
    val min1: Int = range.lower 

您可以获得相机的最小和最大 ISO 范围.

you can get min and max ISO range of your camera.

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