title: How capture image from several DSLR camera via USB use Python?
body: <p>I need to synchronize and capture image from several(10-20) DSLR(Canon) via USB use Python, but I don't know how.</p>
  
  <p>I got it with <code>SparkoCam</code> and this python code, but it work only with one camera</p>
  
  <pre><code>import cv2
  import numpy as np
  cap = cv2.VideoCapture(1)
  while True:
      ret,img=cap.read()
      cv2.imshow('video output',img)
      k=cv2.waitKey(10)&amp; 0xff
      if k==27:
          break
  cap.release()
  cv2.destroyAllWindows()
  </code></pre>
  
  <p>Does anyone knows how can I capture image from DSLR? opencv, sdk?</p>