Fantastic piece of kit that allows you to use your Nikon G lenses on your Fujifilm. You have to go into your Fujifilm settings and set it to take photos without a lens, then it works fine. The aperture is set on the smallest lenses and the aperture ring only changes it by 5 stops. So if you have an F4 lens, you can't go to F16, for example. It has a bit of weight, but it is of excellent build quality. I've used it with a 50mm Nikon lens and a 70-200mm Nikon lens and there is absolutely no movement when everything is connected. It fits perfectly. The focus peaking works well when using the adapter and the focus is spot on. (see photos taken in a dimly lit room) Sharpness is maintained throughout. Since the Fuji is an APS-C and my lenses were made for full frame there is a crop of 1.5 which makes my 50mm 75mm on the Fujifilm and when I use the 70-200mm it gives me due to the crop a focal length of 105 - 300 mm without loss of quality. If you have Nikon glass and a Fujifilm X camera, this is definitely a win-win-win-win for you and saves you money. Yes, it can't be autofocus, but that's a small price to pay, manual focus with peaking is a lot more fun anyway. I definitely recommend this adapter 100%.