Close-up Video-Clip of Tissot Wristwatch Movement Mechanism.

My new Automatic Tissot wristwatch, with a crystal, back cover where the automatic movement is clearly visible.
A close-up Video-Clip of the Balance Spring and the Escapement Mechanism.
Photography:
A special reverse ring was used, (A thin metal ring that allows the Lens to be attached to the Camera Body the other way around).
In this case Nikon Nikkor 18-55 mm Lens.
This means that the lens becomes like a magnifying glass.
All settings must be done in Manual Mode, Focus, and Exposure settings, etc, for both Stills, and Video recordings.
Yes, Nikon D3100 does work for both.