Webcam Eye AF for the Sony A7RII

I am using my Sony A7 RII as a webcam with shallow depth of field with gphoto2 under Linux. The normal auto focus does not follow very well, therefore I assigned the “Eye AF” to the lens button and activate it permanently with some rubber straps and a small button like object underneath.

See this picture:

It works perfectly. The only quirks are, that I have to remove the permanent press, if I want to press other buttons on the cam. It also has to be unpressed, when switching on the camera.

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