Notes:
* The smartphone Galaxy S3 I had "clamped upside down" so that the buttons are not pressed by the brackets. This I had to rotate 180 degrees, so that it does not stand on his head and the image after shooting with the camera app.
* If one uses the paper with a small table tripod, the whole structure can easily tip over due to the weight of the smartphone front, because the phone is placed well ahead of the center of gravity. If necessary, must be balanced by a counterweight.
Otherwise everything was okay.
