A set of two 10mm and 16mm adapter rings for Fuji cameras with a Fuji X mount transferring full information between the body and the lens. Thanks to the rings you can place the camera closer to the subject and get the effect of zoom.
The rings are extremely useful in macro photography, changing almost every lens into a macro lens at a price much lower than the price of such a lens. The rings do not have lenses, so they do not deteriorate the optics of the lens used.
The rings are attached between the camera and the lens. By moving the lens away from the matrix, we force it to focus at closer distances. The more ring we use, the closer the lens will focus. The rings have contacts and carry full information between the lens and camera.