K&F Concept Pentacon 6 Kiev 60 Lens to Nikon AI F Mount Adapter D90 D300 D700 D7100 D7000 Premium-grade K&F Concept adapter,high precision,good quality. Smooth surface for effortless mount,infinity focus allowed. Made of brass and aluminum (not plastic), anodized aluminum construction. Compatible Cameras (including, but not limited to): Nikon D7100, D7000, D5300, D5200, D5100, D5000, D3300, D3200, D3100, D3000, D800, D800E, D700, D610, D600, D300, D300S D200, D100, D50, D60, D70, D80, D90, D40, D40x, N70s, D4, D4S, D3, D3S, D3X, D2, D2H, D2Hs, D2X, D2Xs, D1, D1H, D1X, DF. Please note: Infinity focus positionthe position of the infinity mark of the telephoto lens or super telephoto lens is shifted slightly to the positive side to enable focus adjustment even when focus shift is caused due to temperature changes.The shift range is denoted by an L-shaped line, Be sure to check the focus through the viewfinder even when you shoot at infinity.