Hello Peter, I am sorry but I think you have to sell your contax lenses. I never heard about a contax/nikon adapter. There are adapters for M42-lenses (it is not Leica, but Praktika), but they have a build in lens. Otherwise it is not possible to focus to infinity. The distance between the mount and the film plane is the biggest of all SLR's, I think, and the diameter of the mount is not the biggest. Therefore there are nearly no adapters to nikon mount. Rainer
