code: def getCameraPicture(self, image_id, key):
          
          postParams = {
              "access_token" : self.getAuthToken,
              "image_id" : image_id,
              "key" : key
              }
          resp = postRequest(_GETCAMERAPICTURE_REQ, postParams)
          image_type = imghdr.what('NONE.FILE',resp)
          return resp, image_type
docs: Download a specific image (of an event or user face) from the camera