The Fotodiox-Reverse Mount adapter ring is made of high-quality aluminum. For incredible macro photography, the lens can be fixed on the camera in the opposite direction. The macro reverse ring works with Allen RF mount camera houses from Canon. Each lens with a filter thread, not only Canon RF lenses, fits the threaded side of the adapter (as required, expandable with step-up or step-down rings), so that almost every lens can convert into a macro lens in no time when the costs are retained when the original optical quality. For example, you can attach a Nikon F lens with 52 mm thread to a Canon RF-Mount camera. This means that you can now achieve macro power without having to switch to a special lens and maintain all normal advantages of your optics if the macro function is not used. Sinc.
eBay