Use this adapter to mount Nikon F or G lenses on a Micro 4/3 (MFT) camera such as the Panasonic GH5 or the Black Magic cameras. The adaptor reduces the crop factor by 0.72, giving you a wider image. It also gives you one more stop of light.
I use this adapter to mount the Sigma 18-35 / f1.8 lens (which I am offering in a separate listing) on my GH5 camera.
Tech specs and a complete list of supported cameras here: https://www.enjoyyourcamera.com/Objektivadapter/Adapter-an-Micro-Four-Thirds/Quenox-Fokalreduktor-Adapter-fuer-Nikon-F-Objektiv-an-Micro-Four-Thirds-Kamera-mit-Blendenring::7006.html