Mount Adapter ENG B4 Mount to M4/3

This is an adapter that converts a B4 mount for professional ENG lenses to Micro Four Thirds.
The image will be formed when the lens extender is turned on.

For example...
When a 9mm x 13x ENG lens is attached,
with the extender on, it functions as a 18mm - 234mm lens.
In 35mm equivalent, this is 36mm - 468mm.

Verified with a Micro Four Thirds camera (LUMIX GH4).
As it was only used for verification, it is in like-new condition.
Comes with a sturdy aluminum tripod mount with 1/4 and 3/8 screw holes.