如何使用 picamera2 设置曝光时间

以下代码将使用固定曝光 10ms 捕获 640x480 PNG 图像到 Exposure10ms.png：

exposure_fixed.py

#!/usr/bin/env python3
import time
import picamera2
import numpy as np

with picamera2.Picamera2() as camera:
    camera.set_controls({"ExposureTime": 1000, "AnalogueGain": 1.0})
    camera.start()
    camera.capture_file("Exposure10ms.png")
    camera.stop()

#!/usr/bin/env python3
import time
import picamera2
import numpy as np

with picamera2.Picamera2() as camera:
    camera.set_controls({"ExposureTime": 1000, "AnalogueGain": 1.0})
    camera.start()
    camera.capture_file("Exposure10ms.png")
    camera.stop()

注意在 camera.set_controls() 之后运行 camera.start() 很重要。

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