Now that we are on the Novoflex. I just received mine and have mounted the adapter with the Nikkor. What I am finding is that the Iris ring has to be in the counter clockwise position ie. Iris open to mount the adaptor as per the instructions. When I do this and mount the lens the feel to the focus ring is solid, but the stops on the lens are totally useless, ie, they have no effect. But when I rack focus it makes a very nice transition between the two objects. Now, when I move the iris control on the adapter to the closed postion the stops come into effect, but the feel to focus ring is more loose, and make a slight sound. And not only does it feel more loose, but when I rack focus on two objects the image seems to shift a bit sideways. This is a used Nikkor from Ebay and am wondering if there is something wrong with it? And how is everyone using the Iris control ring on the adapter. Thanks!