Still trying to evade the reflection on the crystal. Not as easy as I thought. Oh well, a learning process. This time I tried with a smaller light box made of dark gray foam. I also use plain A4 photocopy paper to try and prevent the light (from above) reflecting on the crystal.
The 'light box' on a stool.
The victims, my Longines Legend Diver and the controversial Longines W.W.W. reissue watch. Don't think I am improving much. Never mind, I will soldier on.